WO2024140411A1 - Light-emitting device, motor vehicle headlamp and motor vehicle - Google Patents
Light-emitting device, motor vehicle headlamp and motor vehicle Download PDFInfo
- Publication number
- WO2024140411A1 WO2024140411A1 PCT/CN2023/140608 CN2023140608W WO2024140411A1 WO 2024140411 A1 WO2024140411 A1 WO 2024140411A1 CN 2023140608 W CN2023140608 W CN 2023140608W WO 2024140411 A1 WO2024140411 A1 WO 2024140411A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- light source
- emitting device
- reflector
- motor vehicle
- Prior art date
Links
- 230000006870 function Effects 0.000 description 18
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/36—Combinations of two or more separate reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/10—Arrangement or contour of the emitted light
- F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
Definitions
- the first light source is configured to implement a low-beam function
- the second light source is configured to implement a high-beam function
- the second light source and the third light source are provided on the same package structure.
- the second light source and the third light source dissipate heat through the same radiator.
- a headlamp for a vehicle comprises the light-emitting device described above.
- Figure 4 is a schematic diagram of the packaging of the light sources of the second light-emitting module according to an exemplary embodiment of the present disclosure.
- Figure 1 is a schematic diagram of the light-emitting device for a motor vehicle according to an exemplary embodiment of the present disclosure
- Figure 2 is a beam path diagram of the third light source of the second light-emitting module in the light-emitting device for a motor vehicle according to an exemplary embodiment of the present disclosure
- Figure 3 is a beam path diagram of the second light-emitting module according to an exemplary embodiment of the present disclosure
- Figure 4 is a schematic diagram of the packaging of the light sources of the second light-emitting module according to an exemplary embodiment of the present disclosure.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The present application discloses a light-emitting device (10) for a motor vehicle, comprising: a first light-emitting module (100) and a second light-emitting module (200), wherein the first light-emitting module (100) comprises a first light source (101) and a first reflector (102) to form a first light beam, the second light-emitting module (200) comprises a second light source (201) and a second reflector (202) to form a second light beam; the second light-emitting module (200) further comprises a third light source (203), the third light source (203) is configured to emit light, and the light is received and reflected by the second reflector (202) to form a third light beam. The present application also discloses a motor vehicle headlamp and a motor vehicle comprising the light-emitting device (10).
Description
The present invention relates to a light-emitting device, a motor vehicle headlamp and a motor vehicle comprising the light-emitting device.
Vehicles, especially motor vehicles, are equipped with headlamps, also known as headlights, which usually have a high-beam function, a low-beam function, a daytime running light function and a position light function. Usually, when the low-beam function is implemented, the lens part that corresponds to the high-beam function will not be lit. This difference cannot meet the current requirements for lighting appearance.
An objective of the present disclosure is to solve at least one aspect of the above-described problems and shortcomings in the prior art.
According to one aspect of the present application, a light-emitting device for a motor vehicle is provided, comprising a first light-emitting module and a second light-emitting module, wherein the first light-emitting module comprises a first light source and a first reflector, the first reflector is configured to receive and reflect light emitted by the first light source to form a first light beam, the second light-emitting module comprises a second light source and a second reflector, the second reflector is configured to receive and reflect light emitted by the second light source to form a second light beam; the second light-emitting module further comprises a third light source, the third light source is configured to emit light, and the light is received and reflected by the second reflector to form a third light beam.
In some exemplary embodiments, the second light-emitting module further comprises a lens, and the lens is configured to project light reflected by the second reflector.
In some exemplary embodiments, the second reflector collects and reflects light from the second light source and the third light source respectively, and the lens is configured to project light from the second light source and the third light source reflected by the reflector to form the second light beam and the third light beam respectively.
In some exemplary embodiments, the first light source is configured to implement a low-beam function, and the second light source is configured to implement a high-beam function.
In some exemplary embodiments, the light-emitting device further comprises a controller, and the controller is configured to control the third light source to be turned on when the first light source is turned on, to illuminate the lens of the second light-emitting module during the low-beam function.
In some exemplary embodiments, the second light source and the third light source are provided on the same printed circuit board.
In some exemplary embodiments, the second light source and the third light source are provided on the same package structure.
In some exemplary embodiments, the second light source and the third light source dissipate heat through the same radiator.
According to another aspect of the present disclosure, a headlamp for a vehicle is also provided, and the headlamp comprises the light-emitting device described above.
According to yet another aspect of the present disclosure, a vehicle is also provided, and the vehicle comprises the headlamp described above.
With the light-emitting device according to the present invention, by providing an additional light source in the second optical module of the light-emitting device, the lens corresponding to the high-beam function can be illuminated in the low-beam mode without causing interference to the low-beam function or the need to change other structures of the light-emitting device. The light-emitting device according to the present disclosure has a simple structure, can achieve an ideal lighting effect at a relatively low cost, and effectively improves the lighting appearance in the low-beam mode.
Other purposes and advantages of the present invention will become obvious through a detailed description of the present invention by referring to the drawings, which also helps to obtain a comprehensive understanding of the present invention.
Figure 1 is a schematic diagram of the light-emitting device for a motor vehicle according to an exemplary embodiment of the present disclosure;
Figure 2 is a beam path diagram of the third light source of the second light-emitting module of the light-emitting device for a motor vehicle according to an exemplary embodiment of the present disclosure;
Figure 3 is a beam path diagram of the second light-emitting module according to an exemplary embodiment of the present disclosure;
Figure 4 is a schematic diagram of the packaging of the light sources of the second light-emitting module according to an exemplary embodiment of the present disclosure.
SPECIFIC EMBODIMENTS
The technical solution of the present disclosure is explained in further detail below by means of embodiments, in conjunction with the drawings. Herein, identical or similar reference labels indicate identical or similar components. The following explanation of embodiments of the present disclosure with reference to the drawings is intended to explain the general invention concept of the present disclosure, and should not be interpreted as a limitation of the present disclosure.
In addition, in the following detailed description, to facilitate explanation, many specific details are expounded for a comprehensive understanding of the embodiments of the present disclosure. However, it is obvious that one or more embodiments may also be implemented without these specific details. In other cases, well-known structures and apparatuses are illustratively embodied to simplify the accompanying drawings.
Figure 1 is a schematic diagram of the light-emitting device for a motor vehicle according to an exemplary embodiment of the present disclosure; Figure 2 is a beam path diagram of the third light source of the second light-emitting module in the light-emitting device for a motor vehicle according to an exemplary embodiment of the present disclosure; Figure 3 is a beam path diagram of the second light-emitting module according to an exemplary embodiment of the present disclosure; Figure 4 is a schematic diagram of the packaging of the light sources of the second light-emitting module according to an exemplary embodiment of the present disclosure.
According to a general technical concept of the present disclosure, as shown in Figure 1, a light-emitting device 10 for a motor vehicle is provided, comprising: a first light-emitting module 100 and a second light-emitting module 200, wherein the first light-emitting module 100 comprises a first light source 101 and a first reflector 102, the first reflector 102 is configured to receive and reflect light emitted by the first light source 101 to form a first light beam, the second light-emitting module 200 comprises a second light source 201 and a second reflector 202, the second reflector 202 is configured to receive and reflect light emitted by the second light source 201 to form a second light beam; the second light-emitting module 200 further comprises a third light source 203, the third light source 203 is configured to emit light, and the light is received and reflected by the second reflector 202 to form a third light beam.
In one embodiment, the second light-emitting module further comprises a lens 205, and the lens 205 is configured to project light reflected by the second reflector 201.
In one embodiment, the third light source 203 is used to be activated when the first light-emitting module 100 of the light-emitting device 10 is working. The third light source 203 preferably has relatively low power and is used to illuminate the projection lens 205 corresponding to the second light-emitting module 200 when the first light-emitting module 100 is working, thereby ensuring a uniform and constant lighting appearance of the light-emitting device 10.
According to one embodiment of the present invention, the first light source 101 and the second light source 201 are respectively used to generate a first light beam and a second light beam. The provision of the third light source 203 will not affect the functions implemented by the first light source 101 and the second light source 201.
In one example, the first light source 101 is configured to implement a low-beam function, and the second light source 201 is configured to implement a high-beam function.
In one example, the light-emitting device 10 further comprises a controller, and the controller is configured to control the third light source 203 to be turned on when the first light source 101 is turned on, to illuminate the lens 205 of the second light-emitting module 200 during the low-beam function. In other words, the third light source 203 is configured to be turned on simultaneously with the first light source 101 in the first light-emitting module 100 to illuminate the projection lens 205 corresponding to the second light-emitting module 200, i.e., the high-beam function, in the low-beam mode.
In one example, the second reflector 201 comprises a first reflective surface that collects and reflects the light emitted by the second light source 201 and a second reflective surface that collects and reflects the light emitted by the third light source 203, and the lens 205 is configured to project light reflected by the reflector 202, to form the second beam and the third beam, respectively.
Specifically, the second light source 201 is arranged at the focus of the reflective surface of the second reflector 202 of the second light-emitting module 200 so that the second light beam has the maximum intensity.
In one example, to ensure that the third light source 203 can illuminate the lens 205 of the second light-emitting module 200 when the first light source 101 is in the working mode, the third light source 203 is arranged near the second light source 201.
Preferably, the third light source 203 should avoid the focus of the second reflector 202 of the second light-emitting module 200 to prevent dazzling oncoming traffic due to the third light beam generated by the third light source 203 in the low-beam mode. In one example, the distance between the third light source 203 and the second light source 201 is greater than 1 mm. Of course, the distance between the third light source 203 and the second light source 201 may be selected and adjusted according to actual needs, and is not specifically limited in the present invention.
In one example, the second reflector 202 comprises a second reflective surface that collects and reflects light emitted by the third light source 203, and the lens 205 is configured to project the light from the third light source 203 reflected by the second reflector 202 and form the third light beam. The lens 205 not only projects the second light beam formed by the second light source 201, but also projects the third light beam formed by the third light source 203, which can ensure that, when the first light-emitting module 100 is working, the lens 205 corresponding to the second light-emitting module 200 is effectively illuminated to produce the satisfactory lighting effect. As shown in Figure 3, the dotted line represents the light beam path of the light from the second light source 201, and the solid line represents the light beam path of the light from the third light source 203.
In one example, the second reflective surface that collects and reflects the light emitted by the third light source 203 and the first reflective surface that collects and reflects the light emitted by the second light source 201 are the same surface. The third light source 203 and the second light source 201 share the reflector 202 without changing the structure of the second light-emitting module 200, so that the lens 205 of the second light-emitting module 200 and the first light-emitting module 100 can be lit together, to produce the satisfactory lighting results and ensure that the lens corresponding to the high beam can also be lit in the low-beam mode.
To ensure the lighting effect, the third light source 203 is preferably arranged close to the second light source 201. In one example, the distance between the second light source 201 and the third light source 203 may be set to 5-15 mm, to achieve a better lighting effect.
In an exemplary embodiment, as shown in Figure 3, the second light-emitting module 200 further comprises a printed circuit board 207, and the second light source 201 and the third light source 203 are provided on the printed circuit board 207. As an example, the second light source 201 and the third light source 203 are provided on the same printed circuit board, so that the structure of the optical module is more compact and the manufacturing cost is reduced. With the second light source 201 and the third light source 203 provided on the same printed circuit board, the second light source 201 and the third light source 203 can dissipate heat through the same radiator 208, further reducing the size of the light-emitting device. However, those skilled in the art should understand that, in other embodiments of the present disclosure, the second light source 201 and the third light source 203 may also be separately provided on different printed circuit boards.
In an exemplary embodiment, as shown in Figure 4, the second light source 201 and the third light source 203 are provided in the same package structure to further simplify the structure of the printed circuit board and reduce the processing steps of the printed circuit board, thereby reducing costs.
As an example, the first light source 101, the second light source 201 and the third light source 203 may each comprise light-emitting diodes (LEDs) . LEDs have the advantages of a small size, low power consumption and a high luminous intensity. By use of LED light sources, the structure of the optical module can be more compact.
With the light-emitting device according to the present invention, by providing an additional light source in the second optical module of the light-emitting device, the lens corresponding to the high-beam function can be illuminated in the low-beam mode without causing interference to the low-beam function or the need to change other structures of the light-emitting device. The light-emitting device according to the present disclosure has a simple structure, can achieve an ideal lighting effect at a relatively low cost, and effectively improves the lighting appearance in the low-beam mode.
According to another aspect of the present disclosure, a headlamp for a motor vehicle is also provided, and the headlamp comprises the light-emitting device described above.
According to yet another aspect of the present disclosure, a motor vehicle is also provided, and the motor vehicle comprises the headlamp described above.
The headlamp for a motor vehicle and the motor vehicle according to the present invention at least have the advantages of the light-emitting device described above.
Those skilled in the art should understand that all the embodiments described above are exemplary. In addition, those skilled in the art can improve them. The structures described in various embodiments can be freely combined without a conflict in structure or in principle.
Although the present invention has been explained in conjunction with the drawings, the embodiments disclosed in the drawings are intended to provide an illustrative description of preferred embodiments of the present invention, and cannot be interpreted as a limitation of the present invention.
Although some embodiments of the concept of the present disclosure have been shown and described, those ordinarily skilled in the art will understand that changes can be made to these embodiments without departing from the principle and motivation of the general concept of the present invention. The scope of the present invention is defined by the claims and their equivalents.
It should be noted that the term “comprising” does not exclude other elements or steps, and the term “a” or “one” does not exclude a plurality. In addition, any element labels in the claims should not be understood as limiting the scope of the present invention.
Claims (10)
- Light-emitting device (10) for a motor vehicle, characterised in that, comprising a first light-emitting module (100) and a second light-emitting module (200) , whereinthe first light-emitting module (100) comprises a first light source (101) and a first reflector (102) , the first reflector (102) is configured to receive and reflect light emitted by the first light source (101) to form a first light beam,the second light-emitting module (200) comprises a second light source (201) and a second reflector (202) , the second reflector (202) is configured to receive and reflect light emitted by the second light source (201) to form a second light beam;the second light-emitting module (200) further comprises a third light source (203) , the third light source (203) is configured to emit light, and the light is received and reflected by the second reflector (202) to form a third light beam.
- Light-emitting device (10) according to Claim 1, characterised in that the second light-emitting module further comprises a lens (205) , and the lens (205) is configured to project light from the second reflector (202) .
- Light-emitting device (10) according to Claim 2, characterised in that the second reflector (202) collects and reflects light from the second light source (201) and the third light source (203) respectively, and the lens (205) is configured to project light from the second light source (201) and the third light source (203) reflected by the reflector (202) to form the second light beam and the third light beam respectively.
- Light-emitting device (10) according to Claim 3, characterised in that the first light source (101) is configured to implement a low-beam function, and the second light source (201) is configured to implement a high-beam function.
- Light-emitting device (10) according to Claim 4, characterised in that the light-emitting device further comprises a controller, and the controller is configured to control the third light source (203) to be turned on when the first light source (101) is turned on, to illuminate the lens (205) of the second light-emitting module (200) during the low-beam function.
- Light-emitting device (10) according to any one of Claims 1 to 5, characterised in that the second light source (201) and the third light source (203) are provided on the same printed circuit board (207) .
- Light-emitting device (10) according to Claim 6, characterised in that the second light source (201) and the third light source (203) are provided in the same package structure.
- Light-emitting device (10) according to Claim 6, characterised in that the second light source (201) and the third light source (203) dissipate heat through the same radiator (208) .
- Motor vehicle headlamp, characterised in that it comprises the light-emitting device according to any one of Claims 1 to 8.
- Motor vehicle, characterised in that the motor vehicle has the light-emitting device according to any one of Claims 1 to 8 or the motor vehicle headlamp according to Claim 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223529670.1U CN219530639U (en) | 2022-12-27 | 2022-12-27 | Lighting device, motor vehicle headlight and motor vehicle |
| CN202223529670.1 | 2022-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024140411A1 true WO2024140411A1 (en) | 2024-07-04 |
Family
ID=87650501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2023/140608 WO2024140411A1 (en) | 2022-12-27 | 2023-12-21 | Light-emitting device, motor vehicle headlamp and motor vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN219530639U (en) |
| WO (1) | WO2024140411A1 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008105500A (en) * | 2006-10-24 | 2008-05-08 | Stanley Electric Co Ltd | Headlamp for motorcycle |
| JP2011081968A (en) * | 2009-10-05 | 2011-04-21 | Koito Mfg Co Ltd | Lighting fixture for vehicle |
| US20130155710A1 (en) * | 2011-12-19 | 2013-06-20 | Valeo Vision | Lighting module generating an interlacing of light strips |
| DE102014226881A1 (en) * | 2014-12-22 | 2016-06-23 | Automotive Lighting Reutlingen Gmbh | Motor vehicle headlight with a two-chamber reflection system |
| US20170166109A1 (en) * | 2015-12-10 | 2017-06-15 | Valeo Vision | Automotive lighting module with combined low and high beam functions and an adjustable light source |
| JP2018098078A (en) * | 2016-12-14 | 2018-06-21 | 株式会社小糸製作所 | Vehicular headlamp |
| EP3543595A1 (en) * | 2018-03-22 | 2019-09-25 | Stanley Electric Co., Ltd. | Lighting tool for vehicle |
| FR3103253A1 (en) * | 2019-11-19 | 2021-05-21 | Valeo Vision | LIGHT MODULE COMBINES IMAGING THE LIGHTED SURFACE OF A COLLECTOR |
-
2022
- 2022-12-27 CN CN202223529670.1U patent/CN219530639U/en active Active
-
2023
- 2023-12-21 WO PCT/CN2023/140608 patent/WO2024140411A1/en unknown
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008105500A (en) * | 2006-10-24 | 2008-05-08 | Stanley Electric Co Ltd | Headlamp for motorcycle |
| JP2011081968A (en) * | 2009-10-05 | 2011-04-21 | Koito Mfg Co Ltd | Lighting fixture for vehicle |
| US20130155710A1 (en) * | 2011-12-19 | 2013-06-20 | Valeo Vision | Lighting module generating an interlacing of light strips |
| DE102014226881A1 (en) * | 2014-12-22 | 2016-06-23 | Automotive Lighting Reutlingen Gmbh | Motor vehicle headlight with a two-chamber reflection system |
| US20170166109A1 (en) * | 2015-12-10 | 2017-06-15 | Valeo Vision | Automotive lighting module with combined low and high beam functions and an adjustable light source |
| JP2018098078A (en) * | 2016-12-14 | 2018-06-21 | 株式会社小糸製作所 | Vehicular headlamp |
| EP3543595A1 (en) * | 2018-03-22 | 2019-09-25 | Stanley Electric Co., Ltd. | Lighting tool for vehicle |
| FR3103253A1 (en) * | 2019-11-19 | 2021-05-21 | Valeo Vision | LIGHT MODULE COMBINES IMAGING THE LIGHTED SURFACE OF A COLLECTOR |
Also Published As
| Publication number | Publication date |
|---|---|
| CN219530639U (en) | 2023-08-15 |
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