CN103388792A - Vehicle dipped headlight - Google Patents
Vehicle dipped headlight Download PDFInfo
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- CN103388792A CN103388792A CN2013102849899A CN201310284989A CN103388792A CN 103388792 A CN103388792 A CN 103388792A CN 2013102849899 A CN2013102849899 A CN 2013102849899A CN 201310284989 A CN201310284989 A CN 201310284989A CN 103388792 A CN103388792 A CN 103388792A
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- speculum
- convex lens
- eclipser
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Abstract
The invention discloses a vehicle dipped headlight, comprising a light filament, a reflecting mirror, a convex lens and a shielding screen; a reverse reflecting mirror for refracting the B-area light rays emitting from the light filament is arranged at one side, close to the reflecting mirror, of the shielding screen; and the B-area light rays are reflected by the reverse reflecting mirror and the reflecting mirror, and penetrate through the shielding screen to reach convex and be reflected by the convex lens to participate into light distributing. In the vehicle dipped headlight with such a structure, the B-area light rays emitting from the light filament are reflected by the arranged reverse reflecting mirror, and the reflected reflecting light are reflected again as the incident light of the reflecting mirror, so the B-area light rays subjected to the refraction by multiple times penetrate through the shielding screen by a lighting passing hole to reach the convex lens and to be reflected by the convex lens to participate into light distributing, the B-area light rays are utilized, the utilization rate of the light rays of the light filament is improved, the illuminance of light shape emitting from the dipped headlight is improved, and the light shape and the illuminance of the light emitting from the dipped headlight are large.
Description
Technical field
The present invention relates to vehicular field, be specifically related to a kind of automobile dipped headlight.
Background technology
Much automobile factorys, considerably beyond national standard, require the light shape of dipped beam not only wide but also bright to the requirement of automobile short-distance.But the illumination of light shape and width are the conflict bodies, dipped headlights as large in width, and light disperses, and illumination just can not be too high.Although xenon lamp can meet above-mentioned both requirements, xenon lamp is expensive, therefore can't promote the use of in the vehicle of general low and middle-grade times.
In recent years, increasing automobile adopts the projection dipped headlights.How further improving the light source utilization rate of filament bulb projection dipped headlights, design not only wide but also bright dipped headlights, is the target that each automobile lamp designer constantly pursues.
As shown in Figure 1, the optical system of projection dipped headlights is comprised of filament 1, speculum 2, eclipser 3, convex lens 4 for the structure of automobile projection dipped headlights and operation principle.The light that is sent by filament is through the speculum 2 backward front irradiations of reflection, and through eclipser 3 shield portions light, then planoconvex lens 4 focuses on 25 meters screens and maps out the shape of eclipser forward, thereby reaches the luminous intensity distribution purpose.The effect of eclipser is exactly to block out the level of light distribution requirements and 15 ° of "cut-off"lines on 25 meters screens.
Analyze the distribution of light of this projection dipped headlights by the vertical cross-section of this lamp.The light that filament 1 sends substantially can be divided into 3 large zones, be the A district shown in Fig. 1, B district, C district.Wherein the light in A district passes screen and blocks 3 after speculum 2 reflections, shines on screen after planoconvex lens 4 refractions, and the required large section of light of luminous intensity distribution is provided by the A district, and luminous intensity distribution is played a major role.The light in C district is directly sent by filament 1, directly passes eclipser 3, arrives after convex lens 4 reflect and shines on screen, and is less to the luminous intensity distribution role.The light in B district is blocked by eclipser 3 after being sent by filament, can not arrive the luminous intensity distribution zone.Even without the top eclipser is set, the light on top, B district is through the optics geometrical analysis, also according to establishing less than the luminous intensity distribution zone.
At present, national standard auto lamp dim head lights detection range is downwards following 0.75 meter of horizontal h line.If luminous intensity distribution, by 2.5 meters designs, is supposed convex lens and eclipser apart from 40 millimeters, convex lens are 25 meters to the photometric screen distance.According to the optical principle of convex lens, convex lens both sides light main line is similar triangles, and can calculate eclipser lower edge, top is 4 millimeters (40 millimeters multiply by 2.5 meters again divided by 25 meters) to the distance of place, filament center horizontal plane.That is to say break forth more than 4 millimeters in top, B district above the horizontal plane of place, filament center light, all according to less than on filament shield.So the light in B district is inoperative to luminous intensity distribution.Belong to invalid light., if idea uses the light in B district, just can play the effect that increases dipped headlights illumination.
Summary of the invention
The object of the present invention is to provide a kind of automobile dipped headlight, can the light in the B district in traditional dipped headlights effectively be utilized, light shape illumination and width that it sends are all large.
For achieving the above object, the technical solution used in the present invention is: a kind of automobile dipped headlight, it is characterized in that: comprise the peripheral speculum that arranges of filament and filament, the light exit wound of bullet arranged outside of speculum has convex lens, be provided with the eclipser that middle part offers loophole between convex lens and speculum, eclipser is provided with near a side of speculum the reflex reflection mirror that reflects for the B district light that filament is sent, and B district light passes after eclipser arrives convex lens and planoconvex lens refraction and participates in luminous intensity distribution after reflex reflection mirror, mirror reflects.
Further scheme is, described reflex reflection mirror is that the mirror surface of the two arc-shaped curved surface shapes that arrange respectively of the upper and lower side of loophole forms, and the center of curvature of two arc reflection minute surfaces is positioned at the side near filament.
Described reflex reflection mirror is that a hemispherical mirror face forms, and the middle part of hemispherical mirror face offers the vacancy section consistent, identical with the loophole at eclipser middle part, and the centre of sphere of the place sphere of hemispherical mirror face is consistent with the center of filament.Described vacancy section perpendicular to mirror axis to cross section be the strip irregularly-shaped hole.Described converse light microscopic is positioned at eclipser near speculum one side.
In the automobile dipped headlight of said structure, by the reflex reflection mirror that arranges, the B district light that filament sends is reflected, reverberation after reflection is as the incident light of speculum secondary reflection again, and the B district light that sends of filament just can be passed after eclipser arrives convex lens and planoconvex lens refraction and be participated in luminous intensity distribution by loophole after Multi reflection like this.Thereby B district light is utilized, improve the utilization rate of filament light, the illumination of the light shape that the raising dipped headlights sends, the light shape that makes dipped headlights send is large, and illumination is large.
Description of drawings
Fig. 1 is structure and the optical path analysis figure of traditional dipped headlights;
Fig. 2 is structure and the optical path analysis figure of dipped headlights of the present invention.
The specific embodiment
The objective of the invention is to be to provide a kind of and can make the automobile dipped headlight that light shape width is large, illumination is large that sends, its scheme of taking as shown in Figure 2.That is, a kind of automobile dipped headlight, comprise filament 11 and the peripheral speculum 12 that arranges of filament 11, the light exit wound of bullet arranged outside of speculum 12 has convex lens 14, be provided with the eclipser 13 that middle part offers loophole between convex lens 14 and speculum 12, eclipser 13 is provided with near a side of speculum 12 the reflex reflection mirror 15 that reflects for the B district light that filament is sent, and B district light passes after eclipser 13 arrives convex lens 14 and planoconvex lens 14 refractions and participates in luminous intensity distribution after reflex reflection mirror 15, speculum 12 reflections.In the automobile dipped headlight of said structure, the B district light that sends by the 15 pairs of filaments 11 of reflex reflection mirror that arrange reflects, reverberation after reflection is as the incident light of speculum 12 secondary reflection again, and the B district light that sends of filament 11 just can be passed after eclipser 13 arrives convex lens 14 and planoconvex lens 14 refractions and be participated in luminous intensity distribution by loophole after Multi reflection like this.Thereby B district light is utilized, improve the utilization rate of filament light, the illumination of the light shape that the raising dipped headlights sends, the light shape that makes dipped headlights send is large, and illumination is large.The mirror surface that the reflex reflection mirror 15 here can be the two arc-shaped curved surface shapes that the upper and lower side of loophole arranges respectively forms, and the center of curvature of two arc reflection minute surfaces is positioned at the side near filament 11.Reflex reflection mirror 15 may 100% B district light is utilized, but most of light in its reply B district utilizes, thus the illumination of the light shape of sending of raising automobile dipped headlight.
Preferably according to following scheme, specifically implement in the present invention, obtained optimum efficiency.Described reflex reflection mirror 15 is that a hemispherical mirror face forms, the vacancy section that the middle part of hemispherical mirror face offers is consistent with the loophole at eclipser 13 middle parts, coincide, and the centre of sphere of the place sphere of hemispherical mirror face is consistent with filament 11De center.Described vacancy section is the strip irregularly-shaped hole perpendicular to the axial cross section of speculum 12.Described converse light microscopic 15 is positioned at eclipser near speculum one side.
In a word, the present invention can effectively can effectively utilize the light in the B district in traditional dipped headlights, and light shape illumination and width that dipped headlights is sent are all large.
Above demonstration and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. automobile dipped headlight, it is characterized in that: comprise the peripheral speculum (12) that arranges of filament (11) and filament (11), the light exit wound of bullet arranged outside of speculum (12) has convex lens (14), be provided with the eclipser (13) that middle part offers loophole between convex lens (14) and speculum (12), eclipser (13) is provided with near a side of speculum (12) the reflex reflection mirror (15) that reflects for the B district light that filament is sent, B district light is through reflex reflection mirror (15), pass after speculum (12) reflection after eclipser (13) arrives convex lens (14) and planoconvex lens (14) refraction and participate in luminous intensity distribution.
2. automobile dipped headlight as claimed in claim 1, it is characterized in that: the mirror surface of the two arc-shaped curved surface shapes that described reflex reflection mirror (15) arranges respectively for the upper and lower side of loophole forms, and the center of curvature of two arc reflection minute surfaces is positioned at the side near filament (11).
3. automobile dipped headlight as claimed in claim 1, it is characterized in that: described reflex reflection mirror (15) is that a hemispherical mirror face forms, the middle part of hemispherical mirror face offers the vacancy section consistent, identical with the loophole at eclipser (13) middle part, and the centre of sphere of the place sphere of hemispherical mirror face is consistent with the center of filament (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102849899A CN103388792A (en) | 2013-07-09 | 2013-07-09 | Vehicle dipped headlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102849899A CN103388792A (en) | 2013-07-09 | 2013-07-09 | Vehicle dipped headlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103388792A true CN103388792A (en) | 2013-11-13 |
Family
ID=49533149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102849899A Pending CN103388792A (en) | 2013-07-09 | 2013-07-09 | Vehicle dipped headlight |
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| Country | Link |
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| CN (1) | CN103388792A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108368987A (en) * | 2015-12-14 | 2018-08-03 | 黑拉有限责任两合公司 | Lighting device for vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5842767A (en) * | 1997-03-11 | 1998-12-01 | Farlight Corporation | Highly efficient illuminator and method of use thereof |
| CN101162080A (en) * | 2006-10-10 | 2008-04-16 | 株式会社小糸制作所 | Lamp for vehicle |
| EP1975983A2 (en) * | 2003-07-14 | 2008-10-01 | Nikon Corporation | Collector optical system, light source unit, illumination optical apparatus, and exposure apparatus |
| JP4915581B2 (en) * | 2007-07-25 | 2012-04-11 | パナソニック株式会社 | Light source unit and spotlight including the same |
-
2013
- 2013-07-09 CN CN2013102849899A patent/CN103388792A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5842767A (en) * | 1997-03-11 | 1998-12-01 | Farlight Corporation | Highly efficient illuminator and method of use thereof |
| EP1975983A2 (en) * | 2003-07-14 | 2008-10-01 | Nikon Corporation | Collector optical system, light source unit, illumination optical apparatus, and exposure apparatus |
| CN101162080A (en) * | 2006-10-10 | 2008-04-16 | 株式会社小糸制作所 | Lamp for vehicle |
| JP4915581B2 (en) * | 2007-07-25 | 2012-04-11 | パナソニック株式会社 | Light source unit and spotlight including the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108368987A (en) * | 2015-12-14 | 2018-08-03 | 黑拉有限责任两合公司 | Lighting device for vehicle |
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Application publication date: 20131113 |