CN105371198A - Method for reducing LED car lamp irradiating shadows and LED car lamp - Google Patents
Method for reducing LED car lamp irradiating shadows and LED car lamp Download PDFInfo
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- CN105371198A CN105371198A CN201410428915.2A CN201410428915A CN105371198A CN 105371198 A CN105371198 A CN 105371198A CN 201410428915 A CN201410428915 A CN 201410428915A CN 105371198 A CN105371198 A CN 105371198A
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Abstract
The invention relates to the field of car lighting, in particular to a method for reducing LED car lamp irradiating shadows. The method includes the steps that an LED light source and a column body are located on one side of the central axis of a lamp base; the distance between the LED light source and a light shading sheet in an LED car lamp is adjusted, and light projected to the light shading sheet is reduced; and a reflection face is arranged on a light path irradiating to the lamp base through the LED light source. The invention further relates to the LED car lamp. The LED car lamp comprises the lamp base, a column body vertically connected with the lamp base and the LED light source arranged on the surface of the column body; the lamp base, the column body and the LED light source are located inside a lens support, and the light shading sheet is further connected to the inner surface of the lens support; the column body, the LED light source and the light shading sheet are located on the same side of the central axis of the lamp base; and the reflection face is arranged between the LED light source and the lamp base and is arranged on the light path irradiating to the lamp base through the LED light source. According to the method and the LED car lamp, an LED shadow area coincides with a lamp assembly shadow area, and shadows generated on a road are reduced.
Description
Technical field
The present invention relates to automotive lighting field, in particular to the method and the LED automobile lamp that reduce LED automobile lamp irradiation shade.
Background technology
Current car headlamp is mainly based on Halogen lamp LED and xenon lamp, and all there is life-span restriction, light type is uneven, and belong to consumable accessory, need irregular replacing, with the prolongation of service time, light fixture easily occur aging, atomization, leak wait reduction Luminaire efficiency problem.
Compared with traditional headlamp light source, the advantage such as LED light source has that the life-span is long, power consumption is low, volume is little, response is fast, flexible design, control are flexible.And the fitting depth of LED is shallow, to leaving more free space in car.LED has been widely used in vehicle interior lighting device and car external signal device, and is applied to the headlamp of high-grade car on a small quantity, and it becomes inexorable trend for headlamp on a large scale.
The illumination that relevant LED automobile lamp (as shown in Figure 1) uses is flat light source, cylinder 02 is connected to lamp socket 03, LED light source 01 is arranged on cylinder 02, LED light source 01 is on the axis 05 of lamp socket 03, the light that light source sends by lamp reflector cup, by ray cast on road surface, the emission angle of actual light source and the deviation of light fixture 30 degree, cause illumination to be mapped on road surface and occur partial phantom region, make brightness inadequate.
Summary of the invention
The object of the present invention is to provide a kind of method and the LED automobile lamp that reduce LED automobile lamp irradiation shade, to solve the problem that LED automobile lamp is irradiated to the larger shade of ground generation.
The embodiment of the present invention provides a kind of and reduces the method that LED automobile lamp irradiates shade, and its step comprises:
The cylinder being loaded with LED light source is moved along lamp socket, makes described LED light source and described cylinder be in the side of lamp socket axis;
The distance of the anti-dazzling screen of adjustment LED light source and described LED automobile lamp inside, projects light on lamp socket to reduce LED light source, directly projects the ratio of road surface glazing, lifting light utilization efficiency after namely increasing LED light source reflection; Described anti-dazzling screen and described cylinder are in the same side of described lamp socket axis, and described cylinder and described LED light source are between described anti-dazzling screen and described lamp socket;
The light path being irradiated to lamp socket at LED light source arranges reflecting surface.
In certain embodiments, be preferably, described the cylinder being loaded with LED light source moved along lamp socket before, described method also comprises: the lighting angle of adjustment LED light source; LED light source after adjustment lighting angle is connected on the cylinder of LED automobile lamp inside.
In certain embodiments, be preferably, the specific formula for calculation of the light use that described minimizing LED light source projects on light fixture anti-dazzling screen is: h=L × tan α, 2 alpha+beta=180 °, wherein, h is the vertical range between the axis of LED light source luminous point and described lamp socket; L is the beeline between LED light source luminous point and described anti-dazzling screen; β is the lighting angle of LED light source.
In certain embodiments, be preferably, the described light path being irradiated to lamp socket at LED light source arranges reflecting surface is: between one end of lamp socket and one end of described LED light source, arrange reflecting surface; One end of described lamp socket is in the opposite side of described lamp socket axis, and one end of described LED light source is the one end near described lamp socket.
In certain embodiments, be preferably, described in the light path that LED light source is irradiated to lamp socket, reflecting surface is set after, described method also comprises: carry out polishing to described reflecting surface; Or coating film treatment is carried out to described reflecting surface.
The embodiment of the present invention also provides a kind of LED automobile lamp, comprise: lamp socket, with described lamp socket cylinder connected vertically, be located at the LED light source of described damaged surface, described lamp socket, described cylinder, described LED light source are positioned at the inside of lens carrier, the inner surface of described lens carrier also connects anti-dazzling screen, and described anti-dazzling screen is perpendicular to described cylinder; The tail end of described lens carrier is fixedly connected with described lamp socket; Described cylinder, described LED light source, described anti-dazzling screen are all in the same side of the axis of described lamp socket; Arrange reflecting surface between described LED light source and described lamp socket, described reflecting surface is irradiated in the light path of lamp socket at LED light source.
In certain embodiments, be preferably, described LED light source is in the below of the axis of described lamp socket, and described cylinder and described LED light source are between described anti-dazzling screen and described lamp socket;
The distance of the luminous point of described LED light source and the axis of described lamp socket is h; The luminous point of described LED light source and the beeline of described anti-dazzling screen are L; The lighting angle of LED light source is β, and described h, L, β meet following formula: h=L × tan α, 2 alpha+beta=180 °.
In certain embodiments, be preferably, the two ends of described reflecting surface connect one end of lamp socket and one end of described LED light source respectively; One end of described lamp socket is in the opposite side of described lamp socket axis, and one end of described LED light source is in as the one end near described lamp socket.
In certain embodiments, be preferably, described reflecting surface is clinoplain or inclination curved surface.
In certain embodiments, be preferably, described reflecting surface is burnishing surface, or, the outer surface plated film of described reflecting surface.
The minimizing LED automobile lamp that the embodiment of the present invention provides irradiates method and the LED automobile lamp of shade, compared with prior art, LED light source is installed on cylinder, LED light source is in the side of lamp socket axis, and not on axis, decrease the light projected on light fixture anti-dazzling screen, directly project the ratio of road surface glazing after namely increasing LED light source reflection, promote light utilization efficiency; And be irradiated at LED light source in the light path on lamp socket reflecting surface is set, lamp socket will be projected reflect, the emergent light of LED light source is all reflected or direct projection on road surface, increase the effect of road lighting, LED shadow region overlaps with lamp assembly shadow region, reduces the shade produced on road.
Accompanying drawing explanation
Fig. 1 is the light fixture position relationship schematic diagram of main flow LED automobile lamp;
Fig. 2 is the light fixture position relationship schematic diagram of LED automobile lamp in one embodiment of the invention.
Detailed description of the invention
By reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
Consider that current main flow LED automobile lamp is irradiated to problem ground producing larger shade, embodiments providing a kind of method and the LED automobile lamp that reduce LED automobile lamp irradiation shade.
This minimizing LED automobile lamp irradiates the method for shade, and its step comprises:
The cylinder being loaded with LED light source is moved along lamp socket, makes LED light source and cylinder be in the side of lamp socket axis;
The distance of anti-dazzling screen of adjustment LED light source and LED automobile lamp interior, projects light on light fixture anti-dazzling screen to reduce LED light source; Anti-dazzling screen and cylinder are in the same side of lamp socket axis, and cylinder and LED light source are between anti-dazzling screen and lamp socket;
The light path being irradiated to lamp socket at LED light source arranges reflecting surface.
This LED automobile lamp comprises: lamp socket, with lamp socket cylinder connected vertically, be located at the LED light source of damaged surface, and lamp socket, cylinder, LED light source are positioned at the inside of lens carrier, and the inner surface of lens carrier also connects anti-dazzling screen, and anti-dazzling screen is perpendicular to cylinder; The tail end of lens carrier is fixedly connected with lamp socket; Cylinder, LED light source, anti-dazzling screen are all in the same side of the axis of lamp socket; Arrange reflecting surface between LED light source and lamp socket, reflecting surface is irradiated in the light path of lamp socket at LED light source.
LED light source is installed on cylinder, LED light source is in the side of lamp socket axis, and not on axis, decrease the light projected on light fixture anti-dazzling screen, and be irradiated at LED light source in the light path on lamp socket reflecting surface is set, the light projected on lamp socket is reflected, the emergent light of LED light source is all reflected or direct projection on road surface, increase the effect of road lighting, LED shadow region overlaps with lamp assembly shadow region, reduces the shade produced on road.
The LED automobile lamp that the present embodiment provides is a is the automotive headlamp of light source based on LED semiconductor, holder structure is not changed, only the assembly in lamp is changed, directly can carry out more replacing fast to the Halogen lamp LED of present automobile and xenon lamp, and former car parts need not be changed.
Below the method reducing LED automobile lamp irradiation shade is described in detail:
Step 102, the lighting angle of adjustment LED light source;
The lighting angle of LED light source determines the range of exposures of LED light source, selects the range of exposures be applicable to just LED automobile lamp can be made to be irradiated to ground light many as far as possible, increases light utilization efficiency.
The lighting angle of selection or adjustment LED light source can initiatively be determined, other parameter carries out passive adjustment; Also can, based on other parameters initiatively arranged, formula be below utilized to carry out passive selection.The position can knowing this step in various embodiments thus by inference can adjust.In the present embodiment, the irradiating angle of LED light source is for initiatively determining.
Step 104, is connected on the cylinder of LED automobile lamp inside by LED light source;
Step 106, is installed on cylinder on lamp socket, makes LED light source and cylinder all be in the side of lamp socket;
Step 108, determines the distance of LED light source and axis;
LED automobile lamp becomes the main flow of automotive lighting gradually, and researcher improves in different field such as optically focused, increase light efficiencies usually, and the LED automobile lamp of main flow is generally the design adopting area source, and light source is arranged on cylinder.Inventor researchs and analyses this main flow LED automobile lamp, and find that the LED light source irradiating angle be on lamp socket axis is too large, have much light to be divided and give out, cannot be irradiated on road, cause luminous flux low, intensity of illumination is low, and light utilization efficiency is not high.Based on this analysis and research, the position of LED light source and cylinder is changed by inventor, the tie point of cylinder and lamp socket is moved to lamp socket edge, LED light source is made to be in the side of lamp socket axis, namely LED light source is no longer on the axis of lamp socket, project light on anti-dazzling screen to reduce LED light source, increase the ratio that LED light source directly projects the light on road surface after reflection.
In the experimental stage, inventor have employed the distance of two kinds of mode determination LED light sources and lamp socket axis:
Mode one: have employed the distance that follow-up formula infers LED light source and lamp socket axis, this distance can make light utilization efficiency increase;
Mode two: adopt the mode progressively moving the distance of cylinder and axis, explore best luminous flux, in order to carry out the operation of this mode, inventor is provided with chute at lamp socket place, can slide in one end of cylinder in this chute, and this cylinder is also furnished with position fixture, and this position fixture can be latch structure, also can be helicitic texture, or brake increase the assembly of frictional force.
Explored by above-mentioned two kinds of modes and can find suitable position and distance.
Step 110, the distance of the anti-dazzling screen of adjustment LED light source and LED automobile lamp inside, makes the light utilization efficiency be irradiated on road of LED automobile lamp increase;
Anti-dazzling screen is connected with printing opacity support, and extend to the axis of lamp socket to center, anti-dazzling screen is perpendicular to axis.In the present embodiment, anti-dazzling screen and cylinder, light source are in the same side of the axis of lamp socket, can realize the effect of being effectively in the light.Cylinder and the LED light source be arranged on cylinder are between anti-dazzling screen and lamp socket.
As shown in Figure 2, the distance between LED light source luminous point and anti-dazzling screen determines shaded effect, has larger impact effect to luminous flux.In various embodiments, the adjustment of the distance between LED light source luminous point and anti-dazzling screen also can adopt active accommodation, first determines this distance, then according to formula or other practicality moves or selection mode other parameter of corresponding adjustment again; Or determine that parameter and formula determine this distance according to other.The present embodiment have employed active accommodation mode.
Formula mentioned above is the specific formula for calculation that the luminous flux of LED automobile lamp is increased:
h＝L×tanα,2α+β＝180°，
Wherein,
H is the vertical range between LED light source luminous point and the axis of lamp socket;
L is the beeline between LED light source luminous point and anti-dazzling screen;
β is the lighting angle of LED light source.
Step 112, is irradiated at LED light source in the light path on lamp socket and arranges reflecting surface;
After arranging this reflecting surface, the light be irradiated on lamp socket is reflected, and is then condensed on ground by reflector.
The method to set up of reflecting surface is a lot, and inventor, through the exploration of various ways, works out reflecting effect and arranges angle preferably: between one end of lamp socket, arrange reflecting surface in one end of lamp socket and LED light source; One end of lamp socket is in the opposite side of lamp socket axis, and one end of LED light source is in as the one end near lamp socket.
Reflecting surface owing to being furnished with reflector in LED automobile lamp, is suitable for the light of each angle, so can be clinoplain or inclination curved surface.
In order to improve reflecting effect, polishing or surface coating outside can be carried out to reflecting surface in certain embodiments.
What can regulate LED automobile lamp directly, intuitively by said method is irradiated to road top shadow area, makes the light of LED light source all or be close to and all project on road, increases brightness and the utilization rate of light.
Below, then to the LED automobile lamp of the method development of irradiating shade according to this minimizing LED automobile lamp be described in detail:
A kind of LED automobile lamp, comprising:
Lamp socket 3, does not improve lamp socket 3 in the present invention, and object is that continuing to use existing lamp socket 3 is convenient for changing Halogen lamp LED or xenon lamp, and does not need improvement automobile being done to other, saves replacement cost.
Cylinder 2, it is connected with lamp socket 3 is vertical, and existing main flow LED also exists cylinder 2 structure, specifically acts on, connected mode can with reference to prior art.But, it should be noted that in the present embodiment, although describe the problem of tie point between adjustment cylinder 2 and lamp socket 3 in the method for above-mentioned increase luminous flux, its objective is the distance in order to change LED light source 1 and lamp socket 3 axis 5, but, the car light of practical application on automobile, the assembly of its inside can not at will adjust, therefore, in the automobile lamp of reality is installed, concerning the LED automobile lamp of different model, cylinder 2 is fixedly connected with lamp socket 3 usually, relative motion cannot occur between cylinder 2 and lamp socket 3.Adjustable connected mode is mainly used in the experimental stage.
LED light source 1, it is located at cylinder 2 surface, and LED light source 1 can launch with reference to prior art with the concrete connected mode of cylinder 2.In the luminous flux improving LED automobile lamp, the range of exposures of the light that LED light source 1 sends and shaded effect affect larger on luminous flux, inventor finds that LED light source 1 is in axis less than 5 and is conducive to improving luminous flux, therefore, in various embodiments of the present invention, LED light source 1 and cylinder 2 are in the side of lamp socket 3 axis 5, and show in fig. 2, LED light source 1 is in the below of axis 5.
Lens carrier, it covers on the outside of lamp socket 3, cylinder 2, LED light source.For printing opacity and supporting role, this printing opacity support arranges transmissive mirror, specifically can with reference to the structure of main flow LED automobile lamp.
Anti-dazzling screen 4, it is arranged at the inner surface of lens carrier, for shading.This anti-dazzling screen 4 and cylinder 2, LED light source 1 are all in the same side of lamp socket 3 axis 5.
Reflector, belongs to the assembly of LED automobile lamp common configuration, can by light reflection on road surface.
Reflecting surface 6, this reflecting surface 6 is arranged between LED light source 1 and lamp socket 3, and namely this reflecting surface 6 is irradiated in the light path of lamp socket 3 at LED light source 1.In order to improve reflecting effect, following design can be adopted in certain embodiments: the two ends of reflecting surface 6 connect one end of lamp socket 3 and one end of LED light source 1 respectively; One end of lamp socket 3 is in the opposite side of lamp socket 3 axis 5, and one end of LED light source 1 is in as the one end near lamp socket 3.Reflecting surface 6 can adopt planar structure or curved-surface structure, and reflecting surface 6 is burnishing surface or surface coating outside.
Fig. 2 is the location diagram of the light fixture of LED automobile lamp, wherein:
The distance of the luminous point of LED light source 1 and the axis 5 of lamp socket 3 is h;
Cylinder 2 and LED light source 1 are between anti-dazzling screen 4 and lamp socket 3, and cylinder 2 and LED light source 1 are between anti-dazzling screen 4 and lamp socket 3; The luminous point of LED light source 1 and the beeline of anti-dazzling screen 4 are L.This luminous point is near a nearest wafer of anti-dazzling screen 4.
The lighting angle of LED light source 1 is β, h, L, β meet following formula:
h＝L×tanα,2α+β＝180°。
It should be noted that: this LED light source can tilt when mounted, no matter but the inclination of which kind of angle, all defer to above-mentioned design.
By the appropriate design to light source position, the emergent light of LED light line is all reflected or direct projection on road surface, increase the effect of road lighting, thus the light efficiency of improving product.Simultaneously because LED shadow region overlaps with lamp assembly shadow region, therefore there is not the shortcomings such as the luminance shortage in irradiation.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. reduce the method that LED automobile lamp irradiates shade, it is characterized in that, its step comprises:
The cylinder being loaded with LED light source is moved along lamp socket, makes described LED light source and described cylinder be in the side of lamp socket axis;
The distance of anti-dazzling screen of adjustment LED light source and described LED automobile lamp inside, projects light on anti-dazzling screen to reduce LED light source; Described anti-dazzling screen and described cylinder are in the same side of described lamp socket axis, and described cylinder and described LED light source are between described anti-dazzling screen and described lamp socket;
The light path being irradiated to lamp socket at LED light source arranges reflecting surface, and described reflecting surface is clinoplain or inclination curved surface.
2. as claimed in claim 1 reduce the method that LED automobile lamp irradiates shade, it is characterized in that, described the cylinder being loaded with LED light source moved along lamp socket before, described method also comprises:
The lighting angle of adjustment LED light source;
LED light source after possessing adjustment lighting angle is connected on the cylinder of LED automobile lamp inside.
3. the method reducing LED automobile lamp irradiation shade as claimed in claim 2, is characterized in that, the specific formula for calculation of the light use that described minimizing LED light source projects on light fixture anti-dazzling screen is:
h＝L×tanα,2α+β＝180°，
Wherein,
H is the vertical range between the axis of LED light source luminous point and described lamp socket;
L is the beeline between LED light source luminous point and described anti-dazzling screen;
β is the lighting angle of LED light source.
4. the minimizing LED automobile lamp as described in any one of claim 1-3 irradiates the method for shade, it is characterized in that, the described light path being irradiated to lamp socket at LED light source arranges reflecting surface is: between one end of lamp socket, arrange reflecting surface in one end of lamp socket and described LED light source; One end of described lamp socket is in the opposite side of described lamp socket axis, and one end of described LED light source is the one end near described lamp socket.
5. as claimed in claim 4 reduce the method that LED automobile lamp irradiates shade, it is characterized in that, described in the light path that LED light source is irradiated to lamp socket, reflecting surface is set after, described method also comprises:
Polishing is carried out to described reflecting surface; Or coating film treatment is carried out to described reflecting surface.
6. a LED automobile lamp, it is characterized in that, comprise: lamp socket, with described lamp socket cylinder connected vertically, be located at the LED light source of described damaged surface, described lamp socket, described cylinder, described LED light source are positioned at the inside of lens carrier, the inner surface of described lens carrier also connects anti-dazzling screen, and described anti-dazzling screen is perpendicular to described cylinder; The tail end of described lens carrier is fixedly connected with described lamp socket;
Described cylinder, described LED light source, described anti-dazzling screen are all in the same side of the axis of described lamp socket;
Arrange reflecting surface between described LED light source and described lamp socket, described reflecting surface is irradiated in the light path of lamp socket at LED light source; Described reflecting surface is clinoplain or inclination curved surface.
7. LED automobile lamp as claimed in claim 6, it is characterized in that, described LED light source is in the below of the axis of described lamp socket, and described cylinder and described LED light source are between described anti-dazzling screen and described lamp socket;
The distance of the luminous point of described LED light source and the axis of described lamp socket is h; The luminous point of described LED light source and the beeline of described anti-dazzling screen are L; The lighting angle of LED light source is β, and described h, L, β meet following formula: h=L × tan α, 2 alpha+beta=180 °.
8. LED automobile lamp as claimed in claim 7, it is characterized in that, the two ends of described reflecting surface connect one end of lamp socket and one end of described LED light source respectively; One end of described lamp socket is in the opposite side of described lamp socket axis, and one end of described LED light source is in as the one end near described lamp socket.
9. the LED automobile lamp as described in any one of claim 6-8, is characterized in that, described reflecting surface is burnishing surface, or, the outer surface plated film of described reflecting surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410428915.2A CN105371198B (en) | 2014-08-27 | 2014-08-27 | Reduce the method and LED automobile lamp of LED automobile lamp irradiation shade |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410428915.2A CN105371198B (en) | 2014-08-27 | 2014-08-27 | Reduce the method and LED automobile lamp of LED automobile lamp irradiation shade |
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| CN1523260A (en) * | 2002-11-06 | 2004-08-25 | 株式会社小糸制作所 | Vehicular headlamp employing semiconductor light source |
| US20080055896A1 (en) * | 2006-08-30 | 2008-03-06 | David Charles Feldmeier | Systems, devices, components and methods for controllably configuring the color of light emitted by an automotive LED illumination system |
| CN103216778A (en) * | 2012-01-24 | 2013-07-24 | 株式会社小糸制作所 | Lighting unit and vehicular lighting apparatus |
| CN203273618U (en) * | 2013-05-30 | 2013-11-06 | 玉景科技有限公司 | Vehicle LED lamp capable of improving radiating effect |
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2014
- 2014-08-27 CN CN201410428915.2A patent/CN105371198B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1523260A (en) * | 2002-11-06 | 2004-08-25 | 株式会社小糸制作所 | Vehicular headlamp employing semiconductor light source |
| US20080055896A1 (en) * | 2006-08-30 | 2008-03-06 | David Charles Feldmeier | Systems, devices, components and methods for controllably configuring the color of light emitted by an automotive LED illumination system |
| CN103216778A (en) * | 2012-01-24 | 2013-07-24 | 株式会社小糸制作所 | Lighting unit and vehicular lighting apparatus |
| CN203273618U (en) * | 2013-05-30 | 2013-11-06 | 玉景科技有限公司 | Vehicle LED lamp capable of improving radiating effect |
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