CN113847577A - Lighting device for vehicle - Google Patents
Lighting device for vehicle Download PDFInfo
- Publication number
- CN113847577A CN113847577A CN202010596975.0A CN202010596975A CN113847577A CN 113847577 A CN113847577 A CN 113847577A CN 202010596975 A CN202010596975 A CN 202010596975A CN 113847577 A CN113847577 A CN 113847577A
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- Prior art keywords
- light
- lens
- lighting device
- focal point
- emitting
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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]
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- 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
- F21S41/265—Composite lenses; Lenses with a patch-like shape
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- 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
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- 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
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
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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
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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
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
A lighting device for a vehicle includes a compound lens unit, a first reflector, a second reflector, a shield, and a light emitting unit. The compound lens unit includes a first lens and a lens group. The first lens is provided with a first light incident surface, a first light emergent surface and an upper focal point, and the lens group is provided with a second light incident surface, a second light emergent surface and a lower focal point. The first reflector includes a first reflective surface having a first focal point and a second focal point. The second reflector includes a second reflective surface having a third focal point and a fourth focal point. The light-emitting unit comprises a first light-emitting source and a second light-emitting source, when the first light-emitting source is started, light rays enter the first lens after being reflected, a near light shape is projected from the first light-emitting surface, when the second light-emitting source is started, the light rays enter the lens group to project a far light shape, the far light and the near light are switched by means of a switch of the light sources, and the switching speed is high.
Description
Technical Field
The present invention relates to a vehicular lighting device, and more particularly, to a vehicular lighting device with dipped headlight and high beam functions.
Background
A conventional distance light switching device as disclosed in taiwan patent certificate No. M248960 is suitable for a car light, and the car light includes a light emitting element, a reflecting element disposed on one side of the light emitting element, and a projection objective disposed on the opposite side of the light emitting element from the reflecting element. The far and near light switching device is arranged between the light-emitting piece and the projection objective and comprises a fixing piece, an electromagnetic valve fixed on the fixing piece and a shading plate which can be driven by the electromagnetic valve to lift. The light emitted by the light-emitting piece of the car lamp is reflected by the reflecting piece and then is projected to form a light shape through the projection objective. The solenoid valve may control movement of the shutter plate and move the shutter plate between an upper position and a lower position relative to the glowing member. When the light shielding plate is at the upper position, the light shielding plate cuts off light between the light emitting piece and the projection objective, and the cut-off light passes through the projection objective and projects a near light spot with clear cut-off line. In the lower position, the light blocking plate is moved out of the path of the light rays, so that the light rays are not blocked and the light shape of the high beam is projected through the projection objective.
The existing far and near light switching device can realize the conversion of far and near light shapes by controlling the up-and-down movement of the light shielding plate through the electromagnetic valve. However, such an electromagnetic valve is slow in response speed and easy to damage, and once damaged, the function of switching the high beam and the low beam is lost.
Disclosure of Invention
The invention aims to provide a vehicle lighting device which has no electromagnetic valve structure and can simultaneously realize and switch the functions of a low beam lamp and a high beam lamp.
The lighting device for vehicle of the present invention comprises a compound lens unit, a first reflecting member, a second reflecting member, a shielding plate, and a light emitting unit. The composite lens unit comprises a first lens and a lens group, wherein the first lens is arranged along a spotlight optical axis, the lens group is arranged below the first lens, the first lens is provided with a first light incoming surface and a first light outgoing surface, which are arranged oppositely to the spotlight optical axis, and an upper focal point corresponding to the first light incoming surface, the lens group is provided with a plurality of second lenses, one second lens and one second lens, the second lens jointly forms and is arranged along the extending direction of the spotlight optical axis, the extending direction of the spotlight optical axis is arranged on the same side as the first light incoming surface, the second light incoming surface is arranged in a fall manner, the second lens jointly forms and is opposite to the second light outgoing surface of the second light incoming surface, and the one second lens corresponds to the lower focal point of the second light incoming surface. The first reflecting piece is located on one side, corresponding to the first light incoming surface, of the compound lens unit along the light-approaching optical axis and comprises a first reflecting surface which can reflect light towards the first light incoming surface and is arc-shaped. The first reflecting surface is provided with a first focus far away from the first light incident surface and a second focus close to the first light incident surface, and the position of the first reflecting piece enables the second focus to coincide with the upper focus of the first lens. The second reflector is arranged on one side of the composite lens unit corresponding to the second light incident surface along a far light axis and comprises a second reflecting surface which can reflect light towards the second light incident surface and is arc-shaped. The second reflecting surface is provided with a third focus far away from the second light incident surface and a fourth focus arranged on one side of the third focus close to the second light incident surface along the far-reaching lamp optical axis, and the fourth focus is coincided with the lower focus of the lens group by the position of the second reflecting piece. The louver corresponds to the second focus of the first reflecting member and extends downward. The light emitting unit comprises a first light emitting source arranged adjacent to the first focus of the first reflecting piece and a second light emitting source arranged adjacent to the third focus of the second reflecting piece. When the first light-emitting source is turned on, the light emitted by the first light-emitting source is reflected by the first reflecting piece, part of the light is shielded by the shielding plate, the rest of the light enters the first lens from the first light-in surface and projects a near light shape from the first light-out surface, and when the second light-emitting source is turned on, the light emitted by the second light-emitting source is reflected by the second reflecting piece and enters the second light-in surface and projects a far light shape from the second light-out surface.
According to the lighting device for the vehicle, the optical axis of the near lamp and the optical axis of the far lamp are intersected to form an angle.
According to the automotive lighting device, the angle between the optical axis of the near lamp and the optical axis of the far lamp ranges from 0 degree to 60 degrees.
In the vehicular illumination device, the first light incident surface is positioned at the front side of the second light incident surface along an extending direction parallel to the optical axis of the proximity lamp.
In the vehicular illumination device, the distance between the first light incident surface and the second light incident surface is between 1 mm and 30 mm.
The second light-emitting surface is provided with a first section and two second sections, wherein the first section is positioned below the near lamp light axis, the two second sections are arranged on the left side and the right side of the first section, and the two second sections are arranged along the extending direction of the near lamp light axis and fall from the first section.
In the lighting device for a vehicle of the present invention, the lens group has four second lenses, two of the second lenses collectively form the first section, and the other two of the second lenses respectively form the second sections.
In the lighting device for vehicle of the present invention, the first lens and the lens group of the compound lens unit are integrally formed.
In the lighting device for vehicle of the present invention, the first light source and the second light source of the light emitting unit are light emitting diodes formed by at least one semiconductor chip.
The lighting device for the vehicle further comprises a base, and the first reflecting piece, the second reflecting piece, the light-emitting unit and the shielding plate are arranged on the base.
The invention has the beneficial effects that: the switching speed of the near light and the far light is higher compared with the switching speed of the existing electromagnetic valve structure by switching the switches of the first light-emitting source and the second light-emitting source.
Drawings
FIG. 1 is a perspective view of one embodiment of the vehicular illumination apparatus of the present invention;
FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1;
FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2;
FIG. 4 is a schematic view of the optical path of the embodiment from the same perspective as FIG. 2;
FIG. 5 is a light shape gradient diagram of a dipped headlight of the embodiment; and
fig. 6 is a light shape gradient diagram of a high beam of the embodiment.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1, 2 and 3, the lighting device for vehicle of the present invention includes a base 2, a lens holder 3, a compound lens unit 4, a first reflector 5, a second reflector 6, a cover 7, a heat sink 8, and a light emitting unit 9.
The base 2 is provided with the first reflector 5, the second reflector 6, the shielding plate 7, the heat sink 8 and the light emitting unit 9.
The lens holder 3 connects the base 2 and the compound lens unit 4, and is used for setting the compound lens unit 4.
The compound lens unit 4 includes a first lens 41 disposed along a lamp optical axis a, and a lens group 42 disposed below the first lens 41. In the present embodiment, the first lens 41 and the lens group 42 are integrally formed and are clamped in the lens holder 3.
The first lens 41 has a first light incident surface 411 and a first light emitting surface 412 disposed opposite to each other along the optical axis a of the proximity lamp, and an upper focal point 413 corresponding to the first light incident surface 411. The lens assembly 42 includes a plurality of second lenses 421, a second light incident surface 422 formed by the second lenses 421 and located on the same side of the first light incident surface 411 along the extending direction of the light axis a of the spotlight, and disposed in a fall manner with the first light incident surface 411, a second light emitting surface 423 formed by the second lenses 421 and opposite to the second light incident surface 422, and a lower focal point 424 corresponding to the second light incident surface 422. The first light incident surface 411 is located in front of the second light incident surface 422 along a front-back direction X parallel to the light axis a of the spotlight.
The second light emitting surface 423 has a first section 425 located below the optical axis a of the spotlight, and two second sections 426 disposed on opposite sides of the first section 425 along a left-right direction Y perpendicular to the front-back direction X, wherein the second sections 426 are disposed along the front-back direction X in a fall manner with the first section 425. In this embodiment, the lens group 42 has four second lenses 421, two of the second lenses 421 collectively form the first section 425, and the other two of the second lenses 421 respectively form the second sections 426. In this embodiment, the first lens 41 and the plurality of second lenses 421 of the lens group 42 are both a plano-convex lens.
The first reflector 5 is disposed on the base 2 and located along the light axis a of the proximity lamp on a side of the compound lens unit 4 corresponding to the first light incident surface 411. The first reflecting member 5 includes an arc-shaped first reflecting surface 51 capable of reflecting light toward the first light incident surface 411. The first reflecting surface 51 has a first focal point 511 far away from the first light incident surface 411 and a second focal point 512 near the first light incident surface 411, and the position of the first reflecting element 5 makes the second focal point 512 coincide with the upper focal point 413 of the first lens 41.
The second reflector 6 is disposed on a side of the base 2 opposite to the first reflector 5, and is located on a side of the compound lens unit 4 corresponding to the second light incident surface 422 along a distance light axis B. The second reflecting member 6 includes an arc-shaped second reflecting surface 61 capable of reflecting light toward the second light incident surface 422. The second reflecting surface 61 has a third focal point 611 far away from the second incident surface 422, and a fourth focal point 612 disposed along the distance light axis B on a side of the third focal point 611 close to the second incident surface 422, and the second reflecting element 6 is located such that the fourth focal point 612 coincides with the lower focal point 424 of the lens assembly 42.
In the present embodiment, the near light axis a intersects the far light axis B at an angle θ, and the angle θ is between 0 degree and 60 degrees.
The shielding plate 7 is disposed above the base 2, corresponds to the second focus 512 of the first reflector 5, extends downward, and is used for shielding part of the light from the first reflector 5 and forming a cut-off line.
The light emitting unit 9 includes a first light emitting source 91 disposed adjacent to the first focus 511 of the first reflector 5, and a second light emitting source 92 disposed adjacent to the third focus 611 of the second reflector 6. The first light source 91 and the second light source 92 are light emitting diodes (not shown) formed by at least one semiconductor chip.
Referring to fig. 4, 5 and 6, when the first light emitting source 91 is turned on, the light of the first light emitting source 91 is emitted from the first focal point 511 of the first reflector 5, after being reflected by the first reflecting surface 51, a part of the light passes through the second focal point 512, and is shielded by the shielding plate 7, and the rest of the light enters the first lens 41 through the first light incident surface 411 and projects a near light shape from the first light emitting surface 412. When the second light-emitting source 92 is turned on, the light emitted by the second light-emitting source 92 is emitted from the third focal point 611 of the second reflector 6, reflected by the second reflecting surface 61, passes through the fourth focal point 612, enters the lens assembly 42 through the second light incident surface 422, and then is projected into a high beam shape from the second light emitting surface 423.
Referring to fig. 3, 4 and 6, the second reflector 6 can improve the light collection and light collection efficiency of the second light source 92. The first section 425 and the second section 426 of the second light emitting surface 423 are curved surfaces arranged along the front-back direction X, so that the curvatures of the first section 425 and the second section 426 of the second lens 421 can be respectively adjusted during manufacturing, the light traveling route can be controlled by adjusting the curvatures, and the light condensing effect during projecting the high beam shape is improved. The curvatures of the first section 425 and the second section 426 can be controlled respectively, and the projection position of the high beam can also be controlled directly, so that the invention can have a complete high beam shape when the second light-emitting source 92 is lighted alone, without the superposition of light shapes, thereby effectively reducing the power loss of turning on the first light-emitting source 91 at the same time. In this embodiment, the second reflector 6 is used in combination with the lens assembly 42 having the first section 425 and the second section 426 with a fall, so as to increase the light distribution intensity of the high beam and make the light shape more concentrated.
It should be noted that the first light incident surface 411 is disposed in front of the second light incident surface 422 along the front-back direction X, so that the light of the spotlight can be prevented from being projected forward by the second light incident surface 422 of the lens assembly 42, thereby reducing the influence of stray light. In this embodiment, the distance between the first light incident surface 411 and the second light incident surface 422 is between 1 mm and 30 mm.
In summary, the present invention provides a vehicle lighting device without an electromagnetic valve structure, which can switch between a low beam and a high beam by directly controlling and switching the switches of the first light source 91 and the second light source 92, wherein the vehicle lighting device is not easy to be damaged, and can avoid the disadvantages of slow response and easy damage, thereby improving the reliability and the service life of the vehicle lighting device.
Claims (10)
1. A lighting device for vehicle comprises a composite lens unit, a first reflector, a shielding plate and a light-emitting unit, wherein the composite lens unit comprises a first lens arranged along a light axis of a proximity lamp, the first lens is provided with a first light incoming surface and a first light outgoing surface which are arranged along the light axis of the proximity lamp in an opposite way, and an upper focal point corresponding to the first light incoming surface, the first reflector is positioned on one side of the composite lens unit corresponding to the first light incoming surface along the light axis of the proximity lamp and comprises a first reflecting surface which can reflect light towards the first light incoming surface and is arc-shaped, the first reflecting surface is provided with a first focal point far away from the first light incoming surface and a second focal point adjacent to the first light incoming surface, the position of the first reflector enables the second focal point to coincide with the upper focal point of the first lens, the said shutter corresponds to the second focus of the said first reflector and extends downward, the said light-emitting unit includes a first light-emitting source that is set up adjacent to the first focus of the said first reflector, characterized by that: the lighting device for the vehicle further comprises a second reflection part, the composite lens unit further comprises a lens group located below the first lens, the lens group is provided with a plurality of second lenses, a second light incoming surface, a second light outgoing surface and a lower focus, the second light incoming surface is formed by the second lenses together, the extending direction of the second lens along the light axis of the spotlight is located on the same side as the first light incoming surface, the second light incoming surface is arranged with the first light incoming surface in a fall manner, the second light outgoing surface is formed by the second lenses together and is opposite to the second light incoming surface, the lower focus is corresponding to the second light incoming surface, the second reflection part is arranged on one side, corresponding to the second light incoming surface, of the composite lens unit along a far light axis, the second reflection part can reflect light towards the second light incoming surface and is arc-shaped, and the second reflection surface is provided with a third focus far away from the second light incoming surface, and a fourth focus disposed on a side of the third focus adjacent to the second light incident surface along the optical axis of the high beam, the second reflecting piece is positioned to enable the fourth focal point to coincide with the lower focal point of the lens group, the light-emitting unit further comprises a second light-emitting source which is arranged adjacent to the third focal point of the second reflecting piece, when the first light-emitting source is turned on, part of the light emitted by the first light-emitting source is shielded by the shielding plate after the light is reflected by the first reflecting piece, the rest light enters the first lens from the first light incident surface and projects a near light shape from the first light emergent surface, when the second light emitting source is turned on, the light emitted by the second light emitting source is reflected by the second reflecting member and then enters the second light incident surface, and a high beam shape is projected from the second light emitting surface.
2. The lighting device for a vehicle according to claim 1, wherein: the optical axis of the near lamp and the optical axis of the far lamp intersect at an angle.
3. The lighting device for a vehicle according to claim 2, wherein: the angle between the optical axis of the near lamp and the optical axis of the far lamp is between 0 and 60 degrees.
4. The lighting device for a vehicle according to claim 1, wherein: the first light incident surface is positioned at the front side of the second light incident surface along an extending direction parallel to the optical axis of the near light.
5. The lighting device for a vehicle according to claim 4, wherein: the distance between the first light incident surface and the second light incident surface is between 1 mm and 30 mm.
6. The lighting device for a vehicle according to claim 1, wherein: the second light emitting surface is provided with a first section and two second sections, the first section is located below the near lamp light axis, the two second sections are arranged on the left side and the right side of the first section, and the second sections are arranged along the extending direction of the near lamp light axis and fall from the first section.
7. The lighting device for a vehicle according to claim 6, wherein: the lens group has four second lenses, two of the second lenses together forming the first section, and the other two of the second lenses respectively forming the second section.
8. The lighting device for a vehicle according to claim 1, wherein: the first lens and the lens group of the compound lens unit are integrally formed.
9. The lighting device for a vehicle according to claim 1, wherein: the first light source and the second light source of the light emitting unit are light emitting diodes formed by at least one semiconductor chip.
10. The lighting device for a vehicle according to claim 1, wherein: the lighting device for vehicle further comprises a base, wherein the first reflecting piece, the second reflecting piece, the light emitting unit and the shielding plate are arranged on the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010596975.0A CN113847577A (en) | 2020-06-28 | 2020-06-28 | Lighting device for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010596975.0A CN113847577A (en) | 2020-06-28 | 2020-06-28 | Lighting device for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113847577A true CN113847577A (en) | 2021-12-28 |
Family
ID=78972531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010596975.0A Pending CN113847577A (en) | 2020-06-28 | 2020-06-28 | Lighting device for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113847577A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI815697B (en) * | 2022-10-13 | 2023-09-11 | 順邦國際有限公司 | High beam and low beam combination lamp assembly for a vehicle |
-
2020
- 2020-06-28 CN CN202010596975.0A patent/CN113847577A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI815697B (en) * | 2022-10-13 | 2023-09-11 | 順邦國際有限公司 | High beam and low beam combination lamp assembly for a vehicle |
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