WO2018006507A1

WO2018006507A1 - Vehicle lamp illumination device with different functions

Info

Publication number: WO2018006507A1
Application number: PCT/CN2016/102406
Authority: WO
Inventors: 项叶; 顾丹; 沈煜琦; 赵亮; 樊一君; 赵磊
Original assignee: 上海小糸车灯有限公司
Priority date: 2016-07-06
Filing date: 2016-10-18
Publication date: 2018-01-11

Abstract

Disclosed is a vehicle lamp illumination device with different functions, which is provided with LED light sources (1a, 1b) having two different light colours, characterized in that the LED light sources (1a, 1b) with two different light colours are respectively configured with different circuit boards (2a, 2b) which are configured at one side of a thick transparent light guide (3), and finally, light is emitted out through a common light emission face (4a) of the thick transparent light guide (3), realizing two different functions. The illumination device can introduce light rays of the LED light source via the thick transparent light guide from different directions, i.e. at any angle, which is convenient for the adjustment of the distance of the LED and the placement of the vehicle lamp internal structure, and effectively uses space and improves the uniformity of the appearance. In addition, the illumination device has an obvious sense of optical layering. The light guide can be fully fitted to the shape of an opening, which effectively improves the efficiency of the whole optical system.

Description

A lamp illumination device with different functions

Technical field

The present invention relates to a lighting device for a motor vehicle, and in particular to a lighting device for a vehicle having different functions, and more particularly to an assembly of two lighting devices (two different colors of light emitting diodes) LED light source), a lighting device that realizes two different lighting functions. According to the present invention, light rays are incident from the same region or different regions through the same light conductor, and are emitted in the same light-emitting region to realize two different illumination functions.

Background technique

The new type of automotive taillights is usually a motor vehicle lighting device designed and shaped. This new type of automotive taillight is equipped with an LED light source and can be operated by simultaneously operating multiple LED light sources to meet the requirements of the rear turn signal and the reverse light function. To this end, the LED lights of this new type of car taillight device can emit different colors of light.

Up to now, in order to meet the requirements of the rear turn signal and the reverse light function, the LED lights of the new type of automobile taillight device can emit different colors of light, and the existing motor vehicle lighting device is used for different lighting functions. Lighting fixtures need to be designed in consideration of the positional requirements of each other, that is, it is necessary to design a considerable space in the lighting device to install these lighting appliances having different functions, which are usually required to form a matrix arrangement. However, the matrix arrangement of the various lighting fixtures requires a large space, and thus the lighting fixture must be designed to increase the mounting size to meet more than two lighting function requirements.

HELLA KGAA HUECK&CO's invention patent "Lighting device for a motor vehicle" (application number: EP20080163803 filing date: 2008.09.05) provides a car with different functions that can basically meet the above requirements. The lamp lighting device, the technical solution of claim 1 of the invention includes the following features:

"1 sets of multiple light sources (1a, 1b, 1c) corresponding to multiple light functions;

2 coupling a light guide of (1a, 1b, 1c) with a plurality of sets of light sources, and the light guide has at least one common light exiting surface that is versatile;

According to the authorization text of the approved authorization (literature number: EP2161494B1), the technical solution of claim 1 further includes the following technical features:

"3 sets of light sources share one carrier;

4 The function of the first light source is embodied as a daytime running light and/or a position light, and the function of the second light source is embodied as a steering flash;

5 white LEDs (1a) and amber LEDs (1b) are placed on the light source carrier. ”

However, the problems with this patented technical solution are:

The illumination device cannot introduce incident light from a plurality of groups of light sources from different directions, that is, at any angle, which makes it difficult to make a more flexible spatial arrangement when designing the optical and structural design of the vehicle lamp. For example, due to limitations of optical principles, the light source is only Can be incident from the rear, the front exit, or the light guide is in the form of a light pipe, thereby making the spacing of the LEDs inconvenient to adjust (in the ordinary form arrangement, such as when the LED light source is arranged from the rear, the LED spacing is generally higher due to the optical structure) Large, but the LED pitch assembly causes the appearance of the lighting to be poor. In this case, a solution that reduces the LED pitch is required to improve the uniformity of the lighting, which hinders the improvement of the appearance uniformity; at the same time, it is inconvenient for various internal structures of the lighting device. Arranging and effectively utilizing space;

The optical layering is poor, and it is difficult to meet a variety of different modeling schemes;

The light guide is difficult to fit closely with the taillight molding opening, which affects the appearance of the shape.

In summary, the efficiency of the overall optical system of the lighting device needs to be improved.

Summary of the invention

In order to solve the above problems, an object of the present invention is to provide a lamp illumination device having different functions, and a lamp illumination device having different functions of the present invention can be equipped with two types of illumination devices while being in a common lamp body. Internally, two or more different colors (yellow and white, yellow light is the rear turn signal source, white light is the backup light source), and the light LED can be placed behind or on the side of a light conductor. Two colors of light are incident on this. The light conductors have different wavelengths due to different light colors. The light is integrated into the light conductors, forming different focusing, refraction and reflection, and finally emerging from the same area on the front side of the thick-walled transparent parts, reaching two or more kinds. The effect of function reuse. That is, different illumination functions can be realized in the same illumination area, and at the same time, the arrangement of the two illumination appliances requires only a small installation space, so that the design flexibility can be improved.

The technical solution of the present invention is as follows:

A lamp illumination device with different functions, which is used for a taillight of a motor vehicle, and is provided with

LED light sources

1a, 1b of two different light colors, characterized in that

The two different color LED light sources (1a, 1b) are respectively installed with different circuit boards (2a, 2b), and are disposed on one side of the thick-walled transparent light guide (3) to be used for the two different light colors. The incident light of the LED light source (1a, 1b) is introduced into the thick-walled transparent light guide (3) from different directions, and finally the light is emitted through the common light-emitting surface (4a) of the thick-walled transparent light guide (3), thereby realizing two different illumination functions of the vehicle lamp.

A lamp illumination device having different functions according to the present invention, characterized in that

The

LED light sources

1a, 1b of the two different light colors are separately arranged with

different circuit boards

2a, 2b, and disposed on the rear side of the thick-walled transparent light guide 3.

The

LED light sources

1a, 1b of the two different light colors are separately arranged with

different circuit boards

2a, 2b, which are arranged on the lower part of the rear part of the thick transparent light guide 3.

Therefore, the two functions are divided into two heads on the two circuit boards, which can solve the heat resistance problem caused by the LED being too close, effectively shortening the spacing of the LEDs and improving the uniformity of the appearance of the lighting.

The thick-walled transparent light guide 3 is integrated with the upper and lower portions of the

LED light source

1a, 1b of the two different light colors to form an upper and lower portions with an angle of intersection of 20-180°.

The two different color

LED light sources

1a, 1b are respectively arranged with

different circuit boards

2a, 2b, which are arranged on the side of the thick-walled transparent light guide 3 (relative to the common light-emitting direction).

The thick-walled transparent light guide is formed by two-color injection molding of a thick-walled transparent light guide body (3a) with a concentrator and a reflective layer 3b formed on both sides of the thick-walled transparent light guide body (3a), the two-side reflective layer 3b The stray light incident thereon is reflected back into the thick-walled inner portion 3a, and is emitted from the common light-emitting surface 4a.

The reflective layer 3b on the two sides reflects the stray light incident thereon back into the thick-walled inner portion 3a, and finally exits from the common light-emitting surface 4, thereby effectively improving the optical utilization rate, reducing the luminous flux of the original light source, and saving cost.

The common light-emitting surface of the thick-walled transparent light guide is used only as a light-transmitting surface; finally, the light is emitted through the external common light-emitting surface 4b.

The thick-walled transparent light guide 3 is a transparent PMMA or PC material, and the light incident surface is an optical surface having a light distribution effect.

Preferably, the common light exiting belt optical pattern.

The thick-walled transparent light guide 3 is a rectangular block which is injection molded by a thick-wall injection molding process.

Preferably, the rectangular block has a thickness of 5-15 mm.

The thick-walled transparent light guide (3) is a light guiding strip, and forms a common light-emitting surface on the outer peripheral surface of the light guiding strip.

Therefore, the thick-walled transparent light guides are used only as a light-transmitting surface; finally, the external common light-emitting surface emits light, which can add more layering feeling, and the thick-walled transparent light guide can fully fit the modeling opening, and the appearance of the shape better.

The illuminators 3-1 for increasing the optical efficiency are respectively disposed in front of the

LED light sources

1a, 1b of the two different light colors, and are soldered on the light guide 3 in the form of laser welding.

The functions used on the rear light are the backlight of the white light source and the turn signal of the amber light source.

According to the invention, both the light conductor and the lighting fixture can be arranged in any installation location inside the lighting device. That is, the light source with different illumination functions can be injected into the thick-walled parts from the same area or different areas (back or side) and emitted from the same light-emitting area.

According to the invention, the arrangement of the light conductors makes it possible to directly view the lighting fixture as a light source from the outside of the illumination device, while the illumination of the individual illumination functions can exhibit a completely uniform styling expression on the light exit surface.

According to the invention, the lighting fixture can be arranged either on the side of the light conductor or on the light conductor. This may require the provision of fastening elements to secure the lighting fixture to the light conductor, for example the fastening element may be a mounting bracket so that the lighting fixture carrier (LED circuit board) can still be used, or alternatively the lighting can be selected The appliance carrier is completely omitted.

According to the present invention, if it is desired to mark a figure, a shadow or a mark on a common light-emitting surface, such as a manufacturer's trademark, this can be achieved by surface treatment such as sand blasting, etching or other roughening or surface filming. . In the roughened surface area, the problem of light emission should be given priority, and the manufacturer's trademark can be printed on this area while ensuring its functionality.

DRAWINGS

1 is a schematic view of an embodiment of a vehicle light illumination device of the present invention.

In the figure, a plurality of lighting fixtures, LED light sources (1a, 1b) are arranged on the lighting fixture carriers inside the lamp body, that is, the

circuit boards

2a, 2b, and the light source has different lighting functions and colors (1a, yellow light turning lights). , 1b, white light reversing light), the light source is incident from above the light conductor, and is emitted from the common light exit surface 4a.

Figure 2 is a plan view of the vehicular illumination device of the present invention of Figure 1;

FIG. 3 is a schematic diagram of a vehicle lamp illumination device capable of introducing incident light rays of two different light color

LED light sources

1a, 1b into a thick-walled transparent light guide from different light-emitting surfaces according to the present invention.

4A is a schematic diagram showing an example of the

LED light sources

1a, 1b and their connection relationship in FIG.

4B is a schematic diagram showing an example of the

LED light sources

1a, 1b and their connection relationship in FIG.

Figure 5 shows a schematic diagram of the control of a plurality of lighting fixtures having different illumination functions by a common electronic control device.

Fig. 6 is a schematic view showing an example of a lighting device for a vehicle lamp of the present invention.

Figure 7 is a thick-walled transparent light guide of the vehicular illumination device of the present invention, which is formed by two-color injection molding of a thick-walled transparent light guide body (3a) with a concentrator and a reflective layer 3b formed on both sides of the thick-walled transparent light guide body (3a). An example of a schematic.

Figure 8 is a schematic illustration of the control of multiple lighting fixtures having different illumination functions by different electronic control devices.

Fig. 9 is a view showing another example of the illumination device for a vehicle lamp of the present invention;

In the figure, 1a is an illumination source, a light-emitting diode (yellow LED), 1b is an illumination source, and a light-emitting diode (white LED), 2a, 2b are LED circuit boards corresponding to

LED illumination sources

1a, 1b, respectively, 3 is thick-walled transparent The light guide, 3-1 is a concentrator, 3a is a thick-walled transparent light guide body, 3b is a reflective layer formed on both sides of the thick-walled transparent

light guide body

3a, and 4a is a common light-emitting surface formed on the front surface of the thick-walled transparent light guide, 4b is The external common light-emitting surface placed outside the thick-walled transparent light guide, 5 is an electronic control device, 5a and 5b are respectively electronic control devices for controlling the lighting appliances (light sources) 1a and 1b, and 6 is a signal connection line.

detailed description

Example 1

Referring to Fig. 1, Fig. 2, Fig. 6, Fig. 8, a lamp illumination device with different functions is used for a taillight of a motor vehicle, and

LED light sources

1a, 1b are provided with two different light colors. The functions used on the taillights are the backlight of the white light source 1b and the turn signal of the amber 1a light source.

The

LED light sources

1a, 1b of the two different light colors are separately mounted with

different circuit boards

2a, 2b, and disposed on the side of the incident light of the rear side of the thick transparent light guide 3, so as to display the LED light sources 1a of the two different light colors. , 1b incident light The wires are respectively introduced into the thick-walled transparent light guide 3, and finally the light is emitted through the common light-emitting surface 4a of the thick-walled transparent light guide 3, thereby realizing two different illumination functions of the lamp.

The thick-walled transparent light guide 3 is a transparent PMMA or PC material, and the light incident surface is an optical surface having a light distribution function, and the common light-emitting surface has an optical pattern. The thick-walled transparent light guide 3 is a rectangular block which is injection molded by a thick-wall injection molding process, and the rectangular block has a thickness of 5-15 mm.

Example 2

Referring to Fig. 3, Fig. 4A, Fig. 4B, other than the first embodiment, the lighting device of the present invention is formed, except for the following differences:

The

LED light sources

1a, 1b of the two different light colors are separately disposed with

different circuit boards

2a, 2b, and are respectively disposed on the lower portion and the lower portion of the thick-walled transparent light guide 3.

The thick-walled transparent light guide 3 is integrated with the upper and lower portions of the LED

light source

1a, 1b of the two different light colors to form an upper and lower portions with an angle of intersection of 45-100.

Thereby, the

LED light sources

1a, 1b of the two different light colors of the

different wiring boards

2a, 2b are separately incident from the upper and lower ends of the thick transparent light guide 3, respectively. The incident light rays of the two different color

LED light sources

1a, 1b are respectively introduced into the thick-walled transparent light guide 3, and finally the light is emitted through the common light-emitting surface 4a of the thick-walled transparent light guide 3, thereby realizing two different illumination functions of the vehicle lamp.

Therefore, the heat resistance problem caused by the LED being too close can be solved, the spacing of the LEDs can be effectively shortened, and the uniformity of the appearance of the lighting can be improved.

Example 3

The illumination device of the present invention is formed as in Embodiment 1 except for the following differences:

The two different color

LED light sources

1a, 1b are respectively arranged with

different circuit boards

2a, 2b, which are arranged on the side of the thick-walled transparent light guide 3 (relative to the light exit direction).

Example 4

Referring to Figures 7 and 9, in addition to the differences described below, as in Embodiment 1, the lighting device of the present invention is formed:

The thick-walled transparent light guide is formed by two-color injection molding of a thick-walled transparent light guide body 3a with a concentrator and a reflective layer 3b formed on both sides of the thick-walled transparent light guide body 3a, and the reflective layers 3b on the two sides will be incident on the same The stray light rays are reflected back into the thick-walled inner portion 3a and are emitted from the common light-emitting surface 4a.

In addition, a concentrator 3-1 for improving optical efficiency is respectively disposed in front of the

LED light sources

1a, 1b of the two different light colors, and is soldered to the light guide 3 in the form of laser welding.

The reflective layer 3b on the two sides reflects the stray light incident thereon back into the thick-walled inner portion 3a, and finally exits from the common light-emitting surface 4a, thereby effectively improving the optical utilization rate, reducing the luminous flux of the original light source, and saving cost.

Example 5

Referring to Figures 7 and 9, in addition to the differences described below, the illumination device of the present invention is formed as in Example 2:

LED light sources

Example 6

Other than the following differences, the illumination device of the present invention is formed as in Embodiment 1 or 2:

The thick-walled transparent light guides are used only as a light-transmitting surface; the light-emitting surface 4b is finally emitted by the external common light-emitting surface 4b provided with an optical pattern.

Example 7

The illumination device of the present invention is formed as in Embodiment 2 except for the following differences:

Example 8

The thick-walled transparent light guide is a light guiding strip, and the outer peripheral surface of the light guiding strip forms a common light-emitting surface.

According to the lamp illumination device with different functions according to the present invention, incident light can be introduced from different directions, that is, at any angle; the spacing of the LEDs can be easily adjusted to improve the uniformity of appearance; the arrangement of various internal structures is facilitated, and the space is effectively utilized. In addition, the illuminating device has a strong optical layering; the light guide can be attached to the styling opening to obtain a better styling design, thereby effectively improving the efficiency of the overall optical system of the illuminating device.

Claims

A lamp illumination device with different functions, which is used for a taillight of a motor vehicle, and is provided with LED light sources (1a, 1b) of two different light colors, characterized in that

The two different color LED light sources (1a, 1b) are respectively installed with different circuit boards (2a, 2b), and are disposed on one side of the thick-walled transparent light guide (3) to be used for the two different light colors. The incident light of the LED light source (1a, 1b) is introduced into the thick-walled transparent light guide (3) from different directions, and finally the light is emitted through the common light-emitting surface (4a) of the thick-walled transparent light guide (3), thereby realizing two different illumination functions of the vehicle lamp.
A vehicular lighting device having different functions as claimed in claim 1, wherein

The two different color LED light sources (1a, 1b) are respectively installed with different circuit boards (2a, 2b), and are disposed on one side of the thick-walled transparent light guide (3) to be used for the two different light colors. The incident light of the LED light source (1a, 1b) is introduced into the thick-walled transparent light guide (3) from different directions, and finally the light is emitted through the common light-emitting surface (4a) of the thick-walled transparent light guide (3), thereby realizing two different illumination functions of the vehicle lamp.
A vehicular lighting device having different functions according to claim 1 or 2, wherein

The two different light color LED light sources (1a, 1b) are separately arranged with different circuit boards (2a, 2b) and disposed on the rear side of the thick-walled transparent light guide (3).
A vehicular lighting device having different functions according to claim 1 or 2, wherein

The two different light color LED light sources (1a, 1b) are separately arranged with different circuit boards (2a, 2b), and are arranged on the lower part of the rear part of the thick-walled transparent light guide (3).
A vehicular lighting device having different functions according to claim 1 or 2, wherein

The portion of the thick-walled transparent light guide (3) that cooperates with the LED light sources (1a, 1b) of the two different light colors forms an upper and lower portion with an angle of intersection of 20-180° and is integrated.
A vehicular lighting device having different functions according to claim 1 or 2, wherein

The two different color LED light sources (1a, 1b) are respectively arranged with different circuit boards (2a, 2b) disposed on the side of the thick-walled transparent light guide (3).
A vehicular lighting device having different functions according to claim 1 or 2, wherein

The thick-walled transparent light guide is formed by two-color injection molding of a thick-walled transparent light guide body (3a) with a concentrator and a reflective layer (3b) formed on both sides of the thick-walled transparent light guide body (3a), the reflection of the two sides The layer (3b) reflects the stray light incident thereon back into the thick-walled inner portion (3a) and exits from the common light-emitting surface (4a).
A vehicular lighting device having different functions as claimed in claim 7, wherein

The common light-emitting surface (4a) of the thick-walled transparent light guide is used only as a light-transmitting surface, and finally the light is emitted through the external common light-emitting surface (4b).
A vehicular lighting device having different functions according to claim 1 or 2, wherein

The thick-walled transparent light guide (3) is a transparent PMMA or PC material, and the light incident surface is an optical surface having a light distribution function.
A vehicular lighting device having different functions according to claim 1 or 2, wherein

The thick-walled transparent light guide (3) is a rectangular block that is injection molded by a thick-wall injection molding process.
A vehicular lighting device having different functions as claimed in claim 1, wherein

The thick-walled transparent light guide (3) is a light guiding strip, and forms a common light-emitting surface on the outer peripheral surface of the light guiding strip.