CN102486298B - Reflector of front fog lamp, front fog lamp and motor vehicle - Google Patents

Reflector of front fog lamp, front fog lamp and motor vehicle Download PDF

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Publication number
CN102486298B
CN102486298B CN 201010574133 CN201010574133A CN102486298B CN 102486298 B CN102486298 B CN 102486298B CN 201010574133 CN201010574133 CN 201010574133 CN 201010574133 A CN201010574133 A CN 201010574133A CN 102486298 B CN102486298 B CN 102486298B
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China
Prior art keywords
curved
smooth
fog lamp
benchmark
axis
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Expired - Fee Related
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CN 201010574133
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Chinese (zh)
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CN102486298A (en
Inventor
周明杰
罗英达
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Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
Original Assignee
Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
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Application filed by Oceans King Lighting Science and Technology Co Ltd, Shenzhen Oceans King Lighting Engineering Co Ltd filed Critical Oceans King Lighting Science and Technology Co Ltd
Priority to CN 201010574133 priority Critical patent/CN102486298B/en
Publication of CN102486298A publication Critical patent/CN102486298A/en
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Publication of CN102486298B publication Critical patent/CN102486298B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention provides a reflector of a front fog lamp, the front fog lamp and a motor vehicle. The reflector of the front fog lamp comprises a first stepped curved surface, a second stepped curved surface, a first smooth curved surface and a second smooth curved surface, wherein the first stepped curved surface is formed by sequential arrangement of a plurality of strip-shaped curved surfaces along a first direction; the second stepped curved surface is formed by sequential arrangement of a plurality of strip-shaped curved surfaces along a second direction tilting toward the first direction;and the first stepped curved surface, the second stepped curved surface, the first smooth curved surface and the second smooth curved surface are connected in sequence to form a bowl-shaped free-formcurved surface. Compared with the traditional reflectors adopting multilayer curved surfaces which are finely divided, the reflector adopting the first and second paraboloids avoids light losses caused by transition between excessive curved surfaces and has better convergence effect and improved illuminance.

Description

Front fog lamp reflector, front fog lamp and motor vehicle
[technical field]
The invention belongs to lighting field, relate in particular to a kind of front fog lamp reflector, front fog lamp and motor vehicle.
[background technology]
Traditional front fog lamp of automobile generally comprises reflector and the bulb of being located at the reflector center.Have two filaments in the bulb, be respectively applied to lower beam illumination and far lighting.Reflector adopts the multilayer Random Curved Surface Designing, and its first half is mainly used in the dipped beam luminous intensity distribution, and distance light is then got by whole reflector reflection.But when lighting headlight high beam filament, its light light after the reflection of the reflector of upper part is too dispersed, and the free form surface of its each fritter of the first half gets meticulously, causes distance light to converge not, and illumination does not reach the requirement of car light standard.
[summary of the invention]
Based on this, be necessary to provide preferably reflector of a kind of convergence effect, use the front fog lamp of automobile of described reflector, and motor vehicle.
A kind of front fog lamp reflector, comprise: by a plurality of strip curved surfaces along first direction the first stepped curved surface that forms arranged sequentially, favoured the second direction second-order scalariform curved surface that forms arranged sequentially of described first direction by a plurality of strip curved surfaces edge, the first smooth surface and the second smooth surface, the described first stepped curved surface, described second-order scalariform curved surface, described the first smooth surface and described the second smooth surface link to each other successively and form a bowl-shape free form surface; Take light source optical axis as X-axis, set up cartesian coordinate system to pass described front fog lamp reflector bottom end face and orthogonal two rays as Y, Z axis, described the first smooth surface is parabolic based on one first benchmark, at the paraboloidal bus equation of the above the first benchmark of XOY plane is: y 2=ax, wherein, 92≤a≤96; Described the first benchmark parabola rotates 64~66 degree by bus around X-axis and forms; Described the second smooth surface is parabolic based on one second benchmark, at the paraboloidal bus equation of the above the second benchmark of XOY plane is: y 2=bx, wherein, 100≤b≤104; Described the second benchmark parabola is formed around the X-axis 90-degree rotation by bus.
In a preferred embodiment, a=94; B=102.
In a preferred embodiment, the described first stepped curved surface, second-order scalariform curved surface are cut apart based on one the 3rd benchmark parabola, at the paraboloidal bus equation of the above the 3rd benchmark of XOY plane are: y 2=cx, wherein, 96≤c≤100.
In a preferred embodiment, in the upright projection on YOZ plane, the angle X1 scope of the first stepped curved surface region is 160~170 degree, and the angle X2 scope of second-order scalariform curved surface region is 36~44 degree; The broken line V2 that the broken line V1 that the described first stepped curved surface links to each other with described the second smooth surface and the described first stepped curved surface link to each other with described second-order scalariform curved surface, both projections all are parallel to Z axis; Described second-order scalariform curved surface extends through initial point O with the broken line V3 that described the first smooth surface links to each other, and consistent with the gradient direction of second-order scalariform curved surface; The projection of the broken line V4 that described the first smooth surface links to each other with described the second smooth surface is perpendicular to Z axis.
In a preferred embodiment, X2 is 44 degree.
In a preferred embodiment, the paraboloidal focus of described the first benchmark overlaps with the luminous focus of headlight high beam filament as the H4 bulb of light source.
Based on above-mentioned reflector, the present invention also provides a kind of front fog lamp, comprises front fog lamp reflector and the light source that matches with described front fog lamp reflector.Described light source is the H4 bulb, and described front fog lamp reflector comprises above technical scheme.
Based on above-mentioned reflector, the present invention also provides a kind of motor vehicle, and described motor vehicle has foregoing front fog lamp.
The front fog lamp reflector of above-mentioned front fog lamp comprises the first stepped curved surface, second-order scalariform curved surface, and the first smooth surface and the second smooth surface that link to each other with the first stepped curved surface, second-order scalariform curved surface, getting very thin multilayer curved design with traditional employing compares, avoided the light loss that causes owing to too much curved surface and the transition between the curved surface, convergence effect is better, has improved illumination.
[description of drawings]
Fig. 1 is the schematic perspective view of the front fog lamp of automobile of an embodiment;
Fig. 2 is the front view of front fog lamp of automobile shown in Figure 1;
Fig. 3 is the cutaway view along III-III line among Fig. 1;
Fig. 4 is the cutaway view along IV-IV line among Fig. 1;
Fig. 5 and Fig. 6 are the test condition schematic diagram.
[specific embodiment]
Below in conjunction with drawings and Examples front fog lamp of automobile, front fog lamp reflector and motor vehicle are described in further detail.
See also Fig. 1, the front fog lamp of automobile 100 of an embodiment comprises front fog lamp reflector 10 and light source 20.Front fog lamp reflector 10 is roughly bowl-type, and light source 20 is located at the center of front fog lamp reflector 10.Light source 20 is based on halogen bulb of H4 type, and it has optical axis 21.
Please consult simultaneously Fig. 2 and Fig. 3, front fog lamp reflector 10 has reflecting surface, it comprises: by a plurality of strip curved surfaces along first direction (Z-direction among Fig. 2) the first stepped curved surface 11 that forms arranged sequentially, favoured the second direction second-order scalariform curved surface 12 that forms arranged sequentially of described first direction by a plurality of strip curved surfaces edge, the first smooth surface 13, reach the successively continuous bowl-shape free form surface that forms of the second even surface 14, four.
Take light source optical axis 21 as X-axis, set up cartesian coordinate system to pass front fog lamp reflector 10 bottom end face center O and orthogonal two rays as Y, Z axis, it is parabolic that the first smooth surface 13 is based on the first benchmark, and paraboloidal bus 131 equations of the first benchmark are on XOY plane: y 2=ax, wherein, 92≤a≤96; Preferred a=94.Described the first benchmark parabola rotates 64~66 degree by bus around X-axis and forms.
See also Fig. 4, it is parabolic that the second smooth surface 14 is based on one second benchmark, and paraboloidal bus 141 equations of the second benchmark are on XOY plane: y 2=bx, wherein, 100≤b≤104; Preferred b=102.The second benchmark parabola is formed around the X-axis 90-degree rotation by bus.
The above-mentioned first stepped curved surface 11, second-order scalariform curved surface 12 can be based on one the 3rd benchmark parabola to be cut apart, and on XOY plane, the paraboloidal bus equation of the 3rd benchmark is: y 2=cx, wherein, 96≤c≤100.
Be formed with a plurality of curved surfaces 111 of the vertical stripe shape that is divided into the waveform cross section on the above-mentioned first stepped curved surface 11.In the upright projection on YOZ plane, the angle X1 scope of the first stepped curved surface 11 regions is 160~170 degree.
Be formed with a plurality of curved surfaces 121 of the inclination striated that is divided into the waveform cross section on the above-mentioned second-order scalariform curved surface 12.In the upright projection on YOZ plane, the angle X2 scope of second-order scalariform curved surface 12 regions is 36~44 degree.The acute angle that the gradient direction of second-order scalariform curved surface 12 becomes with Z axis is 23~27 degree, and the angle that namely a plurality of strip curved surfaces are obliquely installed with respect to above-mentioned first direction (Z-direction among Fig. 2) in the second-order scalariform curved surface 12 is 23~27 degree.
The angle X3 of first smooth surface 13 region in the upright projection on YOZ plane is 64~66 degree, is preferably 66 degree.
The first stepped curved surface 11 and the second smooth surface 14 connecting places form broken line V1.The first stepped curved surface 11 forms broken line V2 with second-order scalariform curved surface 12 connecting places.V1 and V2 all are parallel to Z axis in the upright projection on YOZ plane.In other words, V1 and V2 along the inner surface of front fog lamp reflector 10 extend and with pass optical axis 21 and perpendicular to the plane parallel of front fog lamp reflector 10 bottom end faces.Second-order scalariform curved surface 12 and the first smooth surface 13 connecting places form broken line V3.V3 extends through initial point O, and consistent with the gradient direction of second-order scalariform curved surface 12.The projection of the broken line V4 that the first smooth surface 13 links to each other with the second smooth surface 14 is perpendicular to Z axis.
Light source 20 comprises dip filament 23 and the headlight high beam filament 25 adjacent with dip filament 23.During use, headlight high beam filament 25 is positioned at the paraboloidal focus of the first benchmark place.
The first smooth surface 13 of the front fog lamp of automobile 100 of present embodiment, the second smooth surface 14 are got very thin multilayer Random Curved Surface Designing with traditional employing and are compared, avoid the light loss that causes owing to too much face piece and the transition between the face piece, improved illumination.
In addition, satisfying under the prerequisite of illumination, the size of above-mentioned front fog lamp reflector 10 can be less than traditional reflector, and for example the opening diameter of front fog lamp reflector 10 can be contracted to 125mm, and the degree of depth can be reduced into 47mm.
The motor vehicle of one embodiment has above-mentioned front fog lamp 100.
Result of use for the front fog lamp 100 of the motor vehicle of verifying present embodiment, the applicant is according to carrying out actual measurement to the requirement of dipped beam, high beam luminous intensity distribution performance to it in " GB4599-2007 lamps for vehicle silk bulb front fog lamp ", and the brightness value in each test point, line segment or zone sees the following form.Experiment showed, that each illumination that need detect target all satisfies the requirement of GB 4599-2007.
(1) dipped beam:
Test point 1+2+3=0.26lx+0.26lx+0.22lx=0.74lx, qualified (require 〉=0.3lx);
Test point 4+5+6=0.35lx+0.55lx+0.45lx 〉=1.35lx is qualified;
0.7lx 〉=test point 7=0.43 〉=0.1lx is qualified;
0.7lx 〉=test point 8=0.56 〉=0.2lx is qualified.
(2) distance light:
Test point or zone Standard-required brightness value (lx) Illuminations actually measured value (lx) Conclusion
??Emax 〉=48 and≤240 ??59.2 Qualified
??HV ??≥0.8Emax ??56.5 Qualified
The HV point is to 1125L and R ??≥24 ??L≥29.0,R≥33.4 Qualified
The HV point is to 2250L and R ??≥6 ??L≥11.3,R≥12.5 Qualified
Annotate: the position of each point sees also " GB 4599-2007 lamps for vehicle silk bulb front fog lamp " P.5-6 as shown in the figure in detail in the table.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (10)

1. a front fog lamp reflector is characterized in that, comprising:
By a plurality of strip curved surfaces along first direction the first stepped curved surface that forms arranged sequentially, favoured the second direction second-order scalariform curved surface that forms arranged sequentially of described first direction by a plurality of strip curved surfaces edge, the first smooth surface and the second smooth surface, the described first stepped curved surface, described second-order scalariform curved surface, described the first smooth surface and described the second smooth surface link to each other successively and form a bowl-shape free form surface; Described first direction is Z-direction;
Take light source optical axis as X-axis, set up cartesian coordinate system to pass described front fog lamp reflector bottom end face and orthogonal two rays as Y, Z axis, described the first smooth surface is parabolic based on one first benchmark, at the paraboloidal bus equation of the above the first benchmark of XOY plane is: y 2=ax, wherein, 92≤a≤96; Described the first benchmark parabola rotates 64~66 degree by bus around X-axis and forms; Described the second smooth surface is parabolic based on one second benchmark, at the paraboloidal bus equation of the above the second benchmark of XOY plane is: y 2=bx, wherein, 100≤b≤104, described the second benchmark parabola is formed around the X-axis 90-degree rotation by bus.
2. front fog lamp reflector as claimed in claim 1 is characterized in that: a=94; B=102.
3. front fog lamp reflector as claimed in claim 1, it is characterized in that: the described first stepped curved surface, second-order scalariform curved surface are cut apart based on one the 3rd benchmark parabola, at the paraboloidal bus equation of the above the 3rd benchmark of XOY plane are: y 2=cx, wherein, 96≤c≤100.
4. front fog lamp reflector as claimed in claim 3 is characterized in that: in the upright projection on YOZ plane, the angle X1 scope of the first stepped curved surface region is 160~170 degree, and the angle X2 scope of second-order scalariform curved surface region is 36~44 degree; The broken line V2 that the broken line V1 that the described first stepped curved surface links to each other with described the second smooth surface and the described first stepped curved surface link to each other with described second-order scalariform curved surface, both projections all are parallel to Z axis; Described second-order scalariform curved surface extends through initial point O with the broken line V3 that described the first smooth surface links to each other, and consistent with the gradient direction of second-order scalariform curved surface; The projection of the broken line V4 that described the first smooth surface links to each other with described the second smooth surface is perpendicular to Z axis.
5. front fog lamp reflector as claimed in claim 4 is characterized in that: X2 is 44 degree.
6. front fog lamp reflector as claimed in claim 1 is characterized in that: the paraboloidal focus of described the first benchmark overlaps with the luminous focus of headlight high beam filament as the H4 bulb of light source.
7. a front fog lamp comprises the light source that the front fog lamp reflector reaches and described front fog lamp reflector matches, and it is characterized in that described light source is the H4 bulb, and described front fog lamp reflector comprises:
By a plurality of strip curved surfaces along first direction the first stepped curved surface that forms arranged sequentially, favoured the second direction second-order scalariform curved surface that forms arranged sequentially of described first direction by a plurality of strip curved surfaces edge, the first smooth surface and the second smooth surface, the described first stepped curved surface, described second-order scalariform curved surface, described the first smooth surface and described the second smooth surface link to each other successively and form a bowl-shape free form surface; Described first direction is Z-direction;
Take light source optical axis as X-axis, set up cartesian coordinate system to pass described front fog lamp reflector bottom end face and orthogonal two rays as Y, Z axis, described the first smooth surface is parabolic based on one first benchmark, at the paraboloidal bus equation of the above the first benchmark of XOY plane is: y 2=ax, wherein, 92≤a≤96; Described the first benchmark parabola rotates 64~66 degree by bus around X-axis and forms; Described the second smooth surface is parabolic based on one second benchmark, at the paraboloidal bus equation of the above the second benchmark of XOY plane is: y 2=bx, wherein, 100≤b≤104, described the second benchmark parabola is formed around the X-axis 90-degree rotation by bus.
8. front fog lamp as claimed in claim 7, it is characterized in that: the described first stepped curved surface, second-order scalariform curved surface are cut apart based on one the 3rd benchmark parabola, at the paraboloidal bus equation of the above the 3rd benchmark of XOY plane are: y 2=cx, wherein, 96≤c≤100.
9. front fog lamp as claimed in claim 8 is characterized in that: in the upright projection on YOZ plane, the angle X1 scope of the first stepped curved surface region is 160~170 degree, and the angle X2 scope of second-order scalariform curved surface region is 36~44 degree; The broken line V2 that the broken line V1 that the described first stepped curved surface links to each other with described the second smooth surface and the described first stepped curved surface link to each other with described second-order scalariform curved surface, both projections all are parallel to Z axis; Described second-order scalariform curved surface extends through initial point O with the broken line V3 that described the first smooth surface links to each other, and consistent with the gradient direction of second-order scalariform curved surface; The projection of the broken line V4 that described the first smooth surface links to each other with described the second smooth surface is perpendicular to Z axis.
10. a motor vehicle is characterized in that, described motor vehicle has front fog lamp as claimed in claim 7.
CN 201010574133 2010-12-06 2010-12-06 Reflector of front fog lamp, front fog lamp and motor vehicle Expired - Fee Related CN102486298B (en)

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105318254A (en) * 2015-12-07 2016-02-10 福州雅德驰光电科技有限公司 High beam and low beam integrated multifunctional LED (Light-Emitting Diode) foglight

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5931574A (en) * 1995-11-02 1999-08-03 Koito Manufacturing Co., Ltd. Automobile headlamp with continuous edges between stepped surfaces
US6004014A (en) * 1996-07-18 1999-12-21 Koito Manufacturing Co., Ltd. Vehicle headlamp with steps in periphery with parabolic edges with different focal lengths
EP1077347A2 (en) * 1999-08-16 2001-02-21 Zizala Lichtsysteme GmbH Vehicle headlamp
CN101266030A (en) * 2007-03-14 2008-09-17 株式会社小糸制作所 Vehicle lamp
CN101581428A (en) * 2008-05-14 2009-11-18 市光工业株式会社 Lamp for vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5931574A (en) * 1995-11-02 1999-08-03 Koito Manufacturing Co., Ltd. Automobile headlamp with continuous edges between stepped surfaces
US6004014A (en) * 1996-07-18 1999-12-21 Koito Manufacturing Co., Ltd. Vehicle headlamp with steps in periphery with parabolic edges with different focal lengths
EP1077347A2 (en) * 1999-08-16 2001-02-21 Zizala Lichtsysteme GmbH Vehicle headlamp
CN101266030A (en) * 2007-03-14 2008-09-17 株式会社小糸制作所 Vehicle lamp
CN101581428A (en) * 2008-05-14 2009-11-18 市光工业株式会社 Lamp for vehicle

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