TR201716706A2 - LED HEADLIGHT MODULE WITH REFLECTOR WITH SUBSECTIONS - Google Patents

Abstract

A lens (9) with an optical axis in the longitudinal direction of the vehicle headlight, light sources (3) that do not cause dazzling of oncoming and ahead traffic and contain a canopy (7) located in the focus of the lens (9) and located behind the focus of the lens. It is a multi-reflector (5) configuration that is formed by taking the focal point of the light sources (3) as the center, and which enables the homogeneity and illumination to be increased by directing the light in certain directions and amounts. B1 surface (B1) and C1 surface (C1), which provide intense illumination in spot form and are symmetrical with each other with respect to Ax axis (Ax), create a unity with the light provided by said B1 surface (B1) and C1 surface (C1) by emitting the light and B2 surface (B2) and C2 surface (C2), which are symmetrical with each other with respect to (Ax), The light formed by the B1 surface (B1), C1 surface (C1), B2 surface (B2) and C2 surface (C2) with their wide angle distribution A1 surface (A1), which provides a homogeneous illumination pattern by covering the distribution, A2 surface (A2), which enables the illumination of the central points specified for low beam in regulations, the reflected light from the reflector (5) from the canopy (7) A3 surface (A3), which provides an ideal homogeneous light pattern by creating illumination above the shadow-light separation line. (Figure 3.1)

Description

DESCRIPTION LED HEADLIGHT MODULE WITH REFLECT'OR WITH SUB SECTIONS Technical Area Meet; an aspherical lens with an optical axis in the longitudinal orientation of the vehicle headlight and with multiple semiconductor light-emitting diode (LED) light sources located behind the focus with the multi-reflector structure formed by centered on the focal point of the passing light sources. State of the Art Typical vehicle headlights are essentially the headlight housing, the headlight lens, the interior of the at least partially closed headlight and that fulfills at least one function of vehicle lighting systems in this section and that at least one It includes the lighting element consisting of the light source.

Each vehicle lighting system performs one or more tasks or functions according to its structure.

A function of vehicle lighting elements to perform each task or function foreseen.

Each lighting function must comply with the amount of light distribution determined by law. lsik The minimum light flux, which is also popularly referred to as luminosity, in full-angle areas. determines the amount. Therefore, in order to avoid dazzling other drivers, every According to the lighting function, it is possible to emit only a limited amount or zero light. exact angle areas are also determined.

Light to provide at least one light source and light control to a vehicle lighting element One or more optical elements are dedicated to help shape the dispersion it could be.

said optical elements; at least one reflector and/or at least one lens and/or placed in the light path between at least one light source of the lighting element and the headlight glass. it may be one or more optical glasses and the like.

For example, in the interior of the headlight, at least one lighting element is behind at least one light source. there may be at least one reflector located. The reflector is a partially separate component and/or with at least part of the headlight housing, such as at least partially reflective coating can be created automatically.

The headlight lens can alternatively or additionally be configured as an optical element, eg headlight a system that helps to provide the above-mentioned light dispersion production on the inner surface of the glass. or there may be more than one optical structure. Thus, the use of optical glass may not be necessary.

In order to produce such optical structures exactly and cost-effectively, headlight glass is generally used today. It is designed with a plastic transparent cover.

Headlight housing or headlight interior, with separate light sources and/or lighting elements inside and/or optical elements and, if necessary, headlight lenses are divided into several chambers. it could be; most of these rooms perform the same and/or different lighting functions.

Low and/or high beam when the lighting functions are used, for example in the vehicle headlight. are in its functions.

The high beam function is mandatory for motor vehicles in traffic, as is the low beam function.

The low beam function of a vehicle headlight is used to illuminate the road ahead of the vehicle and to makes it visible to other drivers.

The high beam function is generally very dark and the road visibility is very low. used in cases where For safety reasons, the vehicle can only be viewed within sight distance. Increased visibility through the high beam as it can be used as fast as it can stand within distance allows driving at higher speeds.

Low beam function High beam whose lighting range is as far as possible function, only in front of the vehicle so that the vision of other drivers is not obstructed. illuminates the area. According to the legal regulations, the area illuminated by the vehicles is the headlight from the ground. it must be 100 times as long as its height and the cone of the beam has a slope of one percent should be. For example, the illumination distance of a headlight 65 cm above the ground is 65 m. will be.

The low beam function of vehicles nowadays usually illuminates the road asymmetrically; In countries where the traffic flows from the right, the right side is more, and in the countries where the traffic is flowing from the left, the left side is more is illuminated. Thus, the view of vehicles coming from the opposite direction is less obstructed. ensure earlier detection of pedestrians, cyclists and wildlife The right side of the road is illuminated more for the driver.

Asymmetry, the use of curved patterns on the headlight lens, which acts as the light diffuser of the vehicle headlight. and/or the appropriate form of freeform designed reflectors in modern headlights. The low and high beam functions are usually produced in the common headlight of a vehicle. low and high beam One or more lights of two or more separate lamps, common to fulfill their function The source is set to depend on the amount of light scatter specified for the low beam function. should be drawn up.

For example, double filament bulb is widely used as a lighting element; light, one of the two coiled filaments of the bulb performing the function of a low beam while the other filament functions as a high beam. low beam The front of the filament used for its function is partially covered by a plate. The sheet is mounted under the filament. so that the light reflected upwards is reflected downwards by the headlight reflectors.

The above mentioned double filament bulbs are used as light sources in vehicle lighting systems. Gas discharged light sources, which are relatively more efficient than their counterparts, are also used. Electric high efficiency and low electrical energy consumption in converting the current to light light-emitting diodes (LED) arranged as a light source in vehicle headlights due to Its use is increasing day by day.

An LED consists of at least one light-emitting diode semiconductor chip, an LED chip, and an electrical component of the LED chip. It consists of at least one connection element that will provide the connection. Normally each LED per chip It has a connecting wire that provides the electrical connection. This jumper is first for LED chip connecting element. Connecting wire, for example, through the conductor path of a lighting element platform It can be connected to a prescribed connection of the LED to the electrical contact. Second connection for LED chip element is the LED chip itself. The LED chip, for example, of a lighting element platform It can be connected via a second conductor to a second connection provided to the electrical contact of the LED*.

Also, an LED may have a primary reflector that surrounds the LED chip. This is the primary reflector, LED It may be formed by the surface of a recess surrounding the chip and/or by a reservoir. This the hopper may be connected to a second connection mentioned above, this may form the connection, this may surround or be surrounded by the connection.

In special types of LEDs, single or all contact elements can be electrically connected, which It provides various contact possibilities for LEDs.

Known mounting formats for LEDs; hole mounting (THT; Through Hole Technology), surface direct lighting element of mounting (SMD; Surface Mounted Device) and LED chips built-in chip (COB; Chip On Board) techniques to which it is connected to the platform.

THT type LEDs are the most common type of LED. Connect the LED chip, for example, to the first electrical connection at the anode connection. wire that connects it to the terminal and connects it to a second electrical connection in the cathode connection. in at least one desired direction of light propagation, for example in the form of coating or pouring They are also called wired LEDs because they consist of a transparent capsule. Pin only from capsule The first and second electrical connections as the anode and cathode connections of the THT LED, also called the wires of the connections come out. For example, the second electricity used as the cathode connection The connector may have a chamber with an LED chip as mentioned above.

Connecting wire, for example, from the first connection used as the anode connection to the LED chip. it comes towards the outside of the chamber.

SMD type LEDs have a mounting surface and electrical contact surfaces for at least one LED chip. consists of a connection template (Lead Frame). This patch template covers at least one mounting surface. It is partially covered by a plastic body with at least one recess to leave it blank. Connection The electrical connection surfaces of the template are also more like the electrical connections of the SMD LEDs. left blank for next surface mounting. At least one LED chip will be enough for at least one mounting surface It is placed at the bottom of the recess in size and electrical contact is provided. Meanwhile, the LED chip is at least it is placed on the first piece of the junction pattern, which is connected to a first electrical junction surface.

A connecting wire, likewise connected to at least one second electrical connection surface combines the second part of the template with the LED chip. Indentation sized enough for the mounting surface, may be designed reflectively. However, the surface of this recess is mentioned above. forms the primary reflector. Thus, the surface may be coated with a reflective material.

COB LEDs are a slotless LED that is placed separately on the luminaire board directly. It consists of a chip and a connecting wire. The back surface of the LED chip is the first electrical part of the COB LEDs. creates the link. To ensure electrical contact, the back surface of the LED chip is illuminated. element platform to a first conductor path, for example by soldering or welding It is connected to conduct electricity. Connection that forms the second electrical connection of the COB LEDs the wire to a second conductor path of the lighting element platform, likewise, for example, Soldering or by welding.

In order to preserve the integrity, the contact elements of the LED chip must be in direct contact. Flip-Chip assembly, in which it is connected to a substrate (substrate), is similar to other contact methods. used should also be mentioned. No connecting wire is used in this contact method.

In THT and SMD LEDs, the capsule that at least partially covers at least part of the LED chip, primary optical element, which may include, for example, an injection molded light directing body It is known to be used as

In summary, LEDs are made with at least one LED chip and, for example, injection molding. formed, at least one primary optic that partially or completely covers the at least one LED chip consists of elements. without a shaped primary optical element surrounding the LED chips, LEDs with only LED chips are also known to be used. Therefore the next For convenience, a distinction is made between the light emitting diode and the LED chip. the term LED for both structures will not be done and unless something different is explicitly mentioned will be used.

The prominent features of LEDs compared to other methods are that the lighting elements The relatively longer lifetime of conventional light sources, smaller sizes and it provides more light efficiency with the same energy use. This feature; as a light source Suitable for every possible mounting application of lighting elements in LED connections makes it possible. However, one or more, alone or in groups, For example, at least one of a lighting element of multiple LEDs placed on a cable It can be used as a light source.

As a result, due to the small amount of space it occupies thanks to its smaller dimensions almost possible with the use of LEDs as the light source of the lighting elements It can be adapted to all usage purposes and especially in compact vehicle lighting systems. can be used.

Vehicle lighting and lighting elements provided for these lightings not only the maximum light efficiency of the light source used, but also The desired or determined amount of light passes through the vehicle lighting with the headlight lens. The light that comes out of its distribution and serves as an illumination, fulfills the said illumination function. its relationship with the high optical quality that reflects the light emitted from the prescribed light source to bring also plays an important role. or the bulb of a gas discharged or filament lamp or a flat headlight with glass optics active they form or have surfaces; these surfaces reflect the beam of light, Effects from the point of light emission to the outside of the vehicle lighting, e.g. They reflect, direct, rent, or reflect light.

Every optical element, every optical interface, and all other optically active surfaces; a lighting leaving the vehicle lighting from the light diffusion point with the headlight glass in the light beam of the function in accordance with the desired and/or legally determined amount of light scattering until they contribute to be; thus, a larger or smaller part of the vehicle comes out differently according to the determined amount of light distribution from the vehicle lighting. Regardless, as soon as the light passes the headlight lens and leaves the vehicle lighting, the Light distribution suitable for the lighting function is provided.

Today, the use of LEDs and lenses in vehicle headlights is becoming more and more common. Available In applications, a lens, a single light source and a single reflector are generally used. This Insufficient and inhomogeneous light distribution is obtained in products designed in this way.

On top of that, configurations using multiple reflectors and light design have been developed. and shown in Figure B*. As in Figure B in the mentioned Japanese patent document, lighting pattern is obtained. Although this visual approach is overlapping is technically difficult and independent of each other in terms of homogeneity. The individual lighting patterns obtained from the surface of the reflectors are seen in Fig. Considering the sensitivity of the system parameters to be superimposed, such as it is quite difficult.

As an example of a different configuration that uses multi-reflector and light design in vehicle headlights. The patent document numbered EP215947981 can be shown. Multiple LED light sources in this document and with its multi-reflector structure, it is homogeneous by using different regions of the reflector surfaces. lighting has been tried to be achieved. Figure C and Figure Dide Patent numbered EP215947981 Drawings of the document are shown. As seen in Figure 0, the reflector structure has 3 main It is divided into sections (30 and 31, 40, 50) and a symmetrical structure is obtained in the Ax axis. A On the other hand, the light pattern obtained from region 31 and the light obtained from region 41b The light pattern obtained from the 41a region as a binder on the other On the other hand, a homogeneous lighting is obtained by applying the symmetry of this location with respect to the Ax axis. is intended to be. As can be seen in the figure, light sources in design (25, 26, 27) respectively; It is on the Ax, Bx and Cx axes. Cx and Bx optical axes 15 to 15 relative to the Ax axis placed inclined. In this design, the primary light source (25) is in the middle, on the edges, there are secondary light sources (26), (27). Reflectors on the sides its centricity is higher than the eccentricity of the middle reflector (30 and 31). In this design The outer surfaces of the reflector (41b), (51b) are the surfaces that emit the most light, and their light emission rates graded on surfaces (41a) and (51a), respectively, and on the middle reflector surfaces (30) and (31) decreases. The instrumentation of the optical structuring, which is the subject of the invention, in the relevant patent document. meeting lighting regulations and providing optical lighting pattern homogeneity It is technically difficult to meet the requirements when evaluated in terms of ease. is thought to be.

As a result, due to the above-mentioned negativities and existing solutions Due to the inadequacy of the subject, it was necessary to make an improvement in the related technical field.

Purpose of the Invention The invention is a new opening in this field, different from the structures used in the current technique. It aims to reveal a structure with different technical features that bring

The primary purpose of the invention is; multi-semiconductor light-emitting diode (LED) and multi-reflector structure By superimposing different lighting patterns on top of each other, a homogeneous and sufficient is to achieve enlightenment.

It is an object of the invention to divide the reflectors into areas in a controlled manner and the pattern in each area, By creating versions with different widths and different light intensities, the desired total is to achieve more homogeneous lighting.

Another purpose of the invention is to cause dazzling of oncoming and continuing traffic. low beam with innovative canopy design that is not obscured and is the focus of the aspherical lens is to present a module that provides the function.

Another object of the invention is signage etc. increasing efficiency in the lighting of warning signs. It is to put forward a structuring that ensures compliance with the regulation.

These configurations, which are used as modules in vehicle headlights, can be used in vehicle headlights due to their compact structure. preferred by manufacturers. The designed modules are based on the geometry of different vehicle headlights. Since it can be easily adapted with minor changes, it is also advantageous to the manufacturer in a commercial sense. it provides.

In order to fulfill the above-described purposes, the invention; In the longitudinal orientation of the vehicle headlight A lens with an optical axis prevents the glare of oncoming and forward traffic. of the said lens, which contains a shade that is not caused and is at the focus of the lens. the focal point of the light sources behind the focus and the aforementioned light sources by directing the light in certain directions and amounts. It is a multi-reflector structure that enables to increase homogeneity and lighting, 0 Intense lighting as a spot and symmetrical to each other with respect to the Ax axis. B1 surface and C1 surface, o Integrity with the light provided by the B1 surface and C1 surface mentioned by spreading the light surface 82 and surface C2, which are symmetrical to each other with respect to the Ax axis, - With the wide-angle distribution it creates, the 81 surface, C1 surface, B2 surface and C2 surface It aims to obtain a homogeneous lighting pattern by covering the light distribution that it creates. A1 surface, which provides o It provides illumination of the center points specified for the low beam in the regulations. A2 surface, o The light reflected from the reflector passes through the canopy between the lens and the reflector. ideal homogeneous light by creating illumination on the shadow-light separation line A3 surface, which allows to obtain the pattern contains.

The structural and characteristic features of the invention and all its advantages are given in the following figures and More clearly thanks to the detailed explanation with references to the figures. will be understood and therefore the assessment should also take into account these figures and detailed explanation. must be made by taking

Figures to Help Understand the Invention Figure 1 is an exploded view of the vehicle headlight configuration. Figure 2 is a side view of the vehicle headlight configuration.

Figure 3 is a top view of the reflector configuration of the invention.

Figure 3.1 is a top view of the reflector configuration of the invention.

Figure 3.2 is a top view of the canopy and lens.

Figure 4, the light obtained from the sections formed in the reflector configuration, which is the subject of the invention. are separate views of their distributions.

Figure 5, the light obtained from the sections formed in the reflector configuration, which is the subject of the invention. is the combined view of the distributions.

Figure C, Figure D are drawings of application no. EP215947QB1. Drawings do not necessarily need to be scaled and are necessary to understand the present invention. details may be neglected. Moreover, at least largely identical elements with or at least substantially identical functions, with the same number is shown.

Description of Part References . Cooler . PCB (Printed Circuit Board) . Light sources (LED) . connector . Reflector . lens holder . Canopy . secondary surface 9. Lens . Frame OC>\IO3CJ`I-l>~(ßl\î-` 11. Connector A. Zone A B. B zone C. C zone ax. axis axis Bx. bx axis cx. CX axis A1. A1 surface A2. A2 surface A3. A3 surface B1. B1 surface 82. 82 surface C1. C1 surface C2. C2 surface A1d. A1 distribution A2d. A2 distribution A3d. A3 distribution B1d. B1 distribution BZd. 82 distribution C1d. C1 distribution C2d. C2 distribution Detailed Description of the Invention In this detailed description, preferred embodiments of the invention are merely better suited to the subject. are explained for clarity and without any limiting effect.

The invention is an aspherical lens (9) with an optical axis in the longitudinal orientation of the vehicle headlight and this Multiple semiconductor light-emitting diode (LED) light sources located behind the focus of the lens The multiplexes formed by focusing on the focal point of the light sources (3) mentioned with (3). In the construction of the reflector (5), it prevents the dazzling of the oncoming and continuing traffic. with the innovative canopy (7) design, which is not caused by a cause and is in the focus of the aspherical lens, It is designed as a lighting module that provides low beam function.

In Figure 1, an exploded general view of the vehicle headlight configuration is given. in vehicle headlights Components required to operate the LEDs used as light sources (3) PCB (Printed Circuit Board) are located in (2) units. The energy required for the light sources (3), It is taken from the vehicle's electrical system via the connectors (4). heat generated in the system A cooler (1) is used to distribute the water and to use the system effectively.

The lens holder (6) is used to attach the lens that collects the lights and other components in the system. is a piece. Canopy (7) is used to obtain the light pattern specified in the regulation.

In order to send light to the upper illumination points (P points) specified in the regulation, secondary surface (8) is designed. A frame (10) and system for fixing as lens outer frame Fasteners (11) are used to fasten the components together.

The configuration of the reflector (5) with multiple optical surfaces, which is the subject of our invention, is one of the light sources. (3) by directing the light rays in certain directions and amounts, thanks to its special design. It provides illumination. Light rays reflected from the reflector (5) and passing through the canopy (7), It is collected by the lens (9) and its shape is determined in the lighting regulations. The lighting pattern is created homogeneously.

In Figure 3, the light rays emanating from the semiconductor light sources (3), surface A (A), surface B (B) and C surface (C) contains three main surfaces. The three main surfaces mentioned in Figure 3.1 7 The illumination seen in Figure 5 by reflecting from the reflector (5) surfaces divided into separate sub-zones creates a similar appearance to the distribution. In Figure 3.1, surface 81 on the Reflector (5) surface surface (02) provides illumination on the left side. B1 surface (81) and C1 surface (C1) spot while providing intense illumination, surface 82 (82) and surface C2 (02) diffuse the light and together with the light provided by the surface (81) and the C1 surface (C1), it creates integrity.

The wide-angle light distribution provided by the A1 surface (A1) covers all these surfaces and is homogeneous. It ensures that the lighting distribution is obtained. A2 surface (A2) is short in regulations. It provides illumination of the center points specified for the beam. A3 surface (A3) illumination with the illumination formed on the shadow-light separation line A homogeneous light distribution pattern in accordance with the regulations is obtained. From the reflector (5) The reflected light passes through the shade (7) between the lens (9) and the reflector (5), leading to shadow-light separation. provides the line. It is also located between the reflector (5) and the lens (9). P points specified in the regulation are illuminated with the secondary surface (8). all this With the overlapping of the regions, the light distribution in Figure 5 was obtained. light distributions are shown separately (A1d, A2d, A3d, B1d, BZd, C1d, CZd). in figure 5 On the other hand, the light distributions mentioned (A1d, A2d, A3d, B1d, BZd, C1d, C2d) are formed together. light distribution is shown.

Claims (1)

REQUESTS . A lens (9) with an optical axis in the longitudinal orientation of the vehicle headlight, light sources (3) that do not cause glare from the oncoming and continuing traffic and that contain a canopy (7) located at the focus of the lens (9) and are behind the focus of the said lens. It is the multi-reflector (5) structuring of the light sources (3), which is formed by centered on the focal point, and which ensures that homogeneity and illumination are increased by directing the light in certain directions and amounts, and its feature is; o The 81 surfaces (81) and the C1 surface (C1), which provide intense lighting in the form of a spot and are symmetrical with each other according to the Ax axis (Ax), o Create integrity with the light provided by the mentioned 81 surfaces (81) and C1 surface (C1) by spreading the light, and The A1 surface (A1), which covers the light distribution formed by the 82 surfaces (82) and the C2 surface (C2), which are symmetrical with each other according to the Ax axis (Ax), o the center specified for the low beam in the regulations A2 surface (A2), which provides the illumination of the points, o The light reflected from the reflector (5) passes through the canopy (7) between the lens (9) and the reflector (5), creating illumination on the upper part of the shadow-light separation line, providing an ideal homogeneous light distribution pattern. It contains A3 surface (A3).