CN105371198B - Reduce the method and LED automobile lamp of LED automobile lamp irradiation shade - Google Patents
Reduce the method and LED automobile lamp of LED automobile lamp irradiation shade Download PDFInfo
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- CN105371198B CN105371198B CN201410428915.2A CN201410428915A CN105371198B CN 105371198 B CN105371198 B CN 105371198B CN 201410428915 A CN201410428915 A CN 201410428915A CN 105371198 B CN105371198 B CN 105371198B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005286 illumination Methods 0.000 claims description 11
- 230000001678 irradiating effect Effects 0.000 claims description 7
- 239000007888 film coating Substances 0.000 claims description 2
- 238000009501 film coating Methods 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 10
- 230000004907 flux Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
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- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The present invention relates to automotive lighting field, and in particular to the method for reducing LED automobile lamp irradiation shade, its step include：LED light source and cylinder is set to be in the side of lamp socket axis；The distance of LED light source and the anti-dazzling screen of LED automobile lamp interior is adjusted, reduces the light projected on anti-dazzling screen；Reflecting surface is set in the light path that LED light source is irradiated on lamp socket.Further relating to LED automobile lamp includes：Lamp socket and lamp socket cylinder connected vertically, the LED light source located at damaged surface, lamp socket, cylinder, LED light source are located at the inside of lens carrier, and the inner surface of lens carrier is also connected with anti-dazzling screen；Cylinder, LED light source, anti-dazzling screen are in the same side of lamp socket axis；Reflecting surface is set between LED light source and lamp socket, and reflecting surface is in the light path that LED light source is irradiated on lamp socket.LED shadow regions of the present invention overlap with lamp assembly shadow region, reduce the caused shade on road.
Description
Technical Field
The invention relates to the field of automobile illumination, in particular to a method for reducing irradiation shadows of an LED automobile lamp and the LED automobile lamp.
Background
Present automotive headlamps mainly uses halogen lamp and xenon lamp as leading, all has the life-span restriction, and the light type is inhomogeneous to belong to vulnerable part, need the unscheduled change, along with the extension of live time, ageing, atomizing easily appear in lamps and lanterns, reduce the problem of lamps and lanterns efficiency such as leak.
Compared with the traditional headlamp light source, the LED light source has the advantages of long service life, low power consumption, small volume, quick response, flexible design, flexible control and the like. Moreover, the installation depth of the LED lamp is shallow, so that more available space is reserved in the vehicle. LEDs have been widely used for interior lighting devices and exterior signaling devices, and are used in small quantities for headlamps of high-end cars, and their use in large-scale headlamps has become a necessary trend.
The illumination used by the related LED automobile lamp (as shown in FIG. 1) is a planar light source, the column 02 is connected to the lamp holder 03, the LED light source 01 is installed on the column 02, the LED light source 01 is located on the central axis 05 of the lamp holder 03, light emitted by the light source is projected onto the road surface through the lamp reflecting cup, and the deviation between the emission angle of the actual light source and the 30-degree angle of the lamp causes the light to irradiate the road surface to form a partial shadow area, so that the brightness is insufficient.
Disclosure of Invention
The invention aims to provide a method for reducing an LED automobile lamp irradiation shadow and an LED automobile lamp, so as to solve the problem that the LED automobile lamp irradiates the ground to generate a larger shadow.
The embodiment of the invention provides a method for reducing the irradiation shadow of an LED automobile lamp, which comprises the following steps:
moving the column body carrying the LED light source along the lamp holder to enable the LED light source and the column body to be positioned on one side of a central axis of the lamp holder;
the distance between the LED light source and a shading sheet in the LED automobile lamp is adjusted to reduce the light projected by the LED light source onto the lamp holder, namely, the proportion of the light directly projected onto the road surface after being reflected by the LED light source is increased, and the light utilization rate is improved; the light shading sheet and the column body are positioned on the same side of the central axis of the lamp holder, and the column body and the LED light source are positioned between the light shading sheet and the lamp holder;
and a reflecting surface is arranged on a light path of the LED light source irradiating the lamp holder.
In some embodiments, preferably, before moving the post carrying the LED light source along the lamp socket, the method further comprises: adjusting the light emitting angle of the LED light source; and connecting the LED light source with the adjusted light-emitting angle to a column inside the LED automobile lamp.
In some embodiments, preferably, the specific calculation formula for reducing the light projected by the LED light source onto the luminaire shade is: h is L multiplied by tan alpha, 2 alpha + beta is 180 degrees, wherein h is the vertical distance between the LED light source luminous point and the central axis of the lamp holder; l is the shortest distance between the LED light source luminous point and the shading sheet; beta is the light emitting angle of the LED light source.
In some embodiments, preferably, the disposing a reflective surface on a light path of the LED light source to the lamp holder is: a reflecting surface is arranged between one end of the lamp holder and one end of the LED light source; one end of the lamp holder is located on the other side of the central axis of the lamp holder, and one end of the LED light source is close to one end of the lamp holder.
In some embodiments, preferably, after the reflecting surface is disposed on the light path of the LED light source irradiated to the lamp holder, the method further includes: polishing the reflecting surface; or the reflecting surface is subjected to film coating treatment.
The embodiment of the invention also provides an LED automobile lamp, which comprises: the LED lamp comprises a lamp holder, a column body vertically connected with the lamp holder and an LED light source arranged on the surface of the column body, wherein the lamp holder, the column body and the LED light source are positioned inside a lens support, the inner surface of the lens support is also connected with a shading sheet, and the shading sheet is vertical to the column body; the tail end of the lens support is fixedly connected with the lamp holder; the column, the LED light source and the shading sheet are all positioned on the same side of the central axis of the lamp holder; a reflecting surface is arranged between the LED light source and the lamp holder, and the reflecting surface is arranged on a light path of the LED light source irradiating the lamp holder.
In some embodiments, preferably, the LED light source is located below a central axis of the lamp holder, and the post and the LED light source are located between the light shielding sheet and the lamp holder;
the distance between the luminous point of the LED light source and the central axis of the lamp holder is h; the shortest distance between the light-emitting point of the LED light source and the shading sheet is L; the light emitting angle of the LED light source is beta, and h, L and beta satisfy the following formula: h is L × tan α, and 2 α + β is 180 °.
In some embodiments, preferably, two ends of the reflecting surface are respectively connected with one end of a lamp holder and one end of the LED light source; one end of the lamp holder is located on the other side of the central axis of the lamp holder, and one end of the LED light source is located at one end close to the lamp holder.
In some embodiments, preferably, the reflecting surface is an inclined plane or an inclined curved surface.
In some embodiments, preferably, the reflecting surface is a polished surface, or an outer surface of the reflecting surface is coated.
Compared with the prior art, the method for reducing the irradiation shadow of the LED automobile lamp and the LED automobile lamp provided by the embodiment of the invention have the advantages that the LED light source is arranged on the column body, is positioned on one side of the central axis of the lamp holder and is not positioned on the central axis, so that the light projected onto the light shading sheet of the lamp is reduced, namely the proportion of the reflected LED light source directly projected onto the road surface is increased, and the light utilization rate is improved; and a reflecting surface is arranged on a light path of the LED light source irradiated on the lamp holder, and the light path is projected to the lamp holder for reflection, so that the emergent light of the LED light source is totally reflected or directly projected on a road surface, the road illumination effect is improved, the LED shadow area is overlapped with the lamp assembly shadow area, and the shadow generated on the road is reduced.
Drawings
FIG. 1 is a schematic view of the positional relationship of the lighting assembly of a mainstream LED automotive lamp;
FIG. 2 is a schematic diagram of the position of the lighting assembly of the LED automotive lamp according to one embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
In view of the problem that the existing mainstream LED automobile lamp generates larger shadow when being irradiated on the ground, the embodiment of the invention provides a method for reducing the irradiation shadow of the LED automobile lamp and the LED automobile lamp.
The method for reducing the irradiation shadow of the LED automobile lamp comprises the following steps:
moving the column body carrying the LED light source along the lamp holder to enable the LED light source and the column body to be positioned on one side of a central axis of the lamp holder;
adjusting the distance between the LED light source and a shading sheet in the LED automobile lamp to reduce the light projected by the LED light source onto the shading sheet of the lamp; the light shading sheet and the column body are positioned on the same side of the central axis of the lamp holder, and the column body and the LED light source are positioned between the light shading sheet and the lamp holder;
and a reflecting surface is arranged on a light path of the LED light source irradiating the lamp holder.
This LED car lamp includes: the LED lamp comprises a lamp holder, a column body vertically connected with the lamp holder and an LED light source arranged on the surface of the column body, wherein the lamp holder, the column body and the LED light source are positioned inside a lens support; the tail end of the lens bracket is fixedly connected with the lamp holder; the column, the LED light source and the shading sheet are all positioned on the same side of the central axis of the lamp holder; a reflecting surface is arranged between the LED light source and the lamp holder, and the reflecting surface is arranged on a light path of the LED light source irradiating the lamp holder.
The LED light source is arranged on the column body, the LED light source is located on one side of a central axis of the lamp holder and is not located on the central axis, light projected onto the lamp shade is reduced, a reflecting surface is arranged on a light path of the LED light source, which irradiates the lamp holder, light projected onto the lamp holder is reflected, emergent light of the LED light source is totally reflected or directly projected onto a road surface, the road lighting effect is improved, an LED shadow area is overlapped with a lamp assembly shadow area, and shadows generated on the road are reduced.
The LED automobile lamp provided by the embodiment is an automobile headlamp taking an LED semiconductor as a light source, the structure of a lamp holder is not changed, only components in the lamp are changed, and the halogen lamp and the xenon lamp for the existing automobile can be directly replaced quickly without changing original automobile parts.
The following describes in detail a method for reducing the illumination shadow of an LED car lamp:
step 102, adjusting the light emitting angle of an LED light source;
the light-emitting angle of the LED light source determines the irradiation range of the LED light source, and the LED automobile lamp can irradiate the light on the ground as much as possible by selecting the proper irradiation range, so that the light utilization rate is increased.
The light emitting angle of the LED light source can be actively determined by selecting or adjusting, and other parameters are passively adjusted; the latter formula can also be used for passive selection based on other parameters of the active setting. It is thus inferred that the position of this step can be adjusted in different embodiments. In the present embodiment, the illumination angle of the LED light source is actively determined.
104, connecting an LED light source to a column inside the LED automobile lamp;
step 106, mounting the column body on a lamp holder, so that the LED light source and the column body are positioned on one side of the lamp holder;
step 108, determining the distance between the LED light source and the central axis;
LED car lamps gradually become the mainstream of car lighting, researchers usually improve in different fields such as light condensation and light efficiency increase, and the mainstream LED car lamps usually adopt a design mode of a surface light source, and the light source is arranged on a column body. The inventor conducts research and analysis on the mainstream LED automobile lamp, and finds that the LED light source on the central axis of the lamp holder has too large irradiation angle, so that a lot of light is scattered and emitted and cannot irradiate the road, and the mainstream LED automobile lamp has low luminous flux, low illumination intensity and low light utilization rate. Based on the analysis and research, the inventor changes the positions of the LED light source and the column body, and moves the connecting point of the column body and the lamp holder to the edge of the lamp holder to enable the LED light source to be positioned at one side of the central axis of the lamp holder, namely the LED light source is not positioned on the central axis of the lamp holder, so that the light projected by the LED light source onto the shading sheet is reduced, and the proportion of the light directly projected onto the road surface after being reflected by the LED light source is increased.
In the experimental stage, the inventor adopts two ways to determine the distance between the LED light source and the central axis of the lamp holder:
the first method is as follows: the distance between the LED light source and the central axis of the lamp holder is deduced by adopting a subsequent formula, and the distance can increase the light utilization rate;
the second method comprises the following steps: in order to search the optimal luminous flux by gradually moving the distance between the cylinder and the central axis, the inventor sets a sliding groove at the lamp holder, one end of the cylinder can slide in the sliding groove, and the cylinder is also provided with a position fixing piece which can be a pin structure, a thread structure or a component for increasing friction force by braking.
The suitable position and distance can be found by the two methods.
Step 110, adjusting the distance between an LED light source and a shading sheet inside an LED automobile lamp to increase the utilization rate of light of the LED automobile lamp, which is irradiated on a road;
the anti-dazzling screen is connected with the light-transmitting support and extends to the central axis of the lamp holder towards the center, and the anti-dazzling screen is perpendicular to the central axis. In this embodiment, the light-shielding sheet, the column and the light source are located on the same side of the central axis of the lamp holder, so that an effective light-shielding effect can be achieved. The cylinder is in between lens and the lamp stand with the LED light source that sets up on the cylinder.
As can be seen from fig. 2, the distance between the light emitting point of the LED light source and the light shielding plate determines the light shielding effect, and has a large influence on the luminous flux. In different embodiments, the distance between the light emitting point of the LED light source and the light shielding sheet can be actively adjusted, the distance is determined first, and then other parameters are adjusted correspondingly according to a formula or other practical moving or selecting modes; or the distance may be determined based on other determined parameters and formulas. The present embodiment employs an active adjustment mode.
The above mentioned formula is a specific calculation formula for increasing the luminous flux of the LED automobile lamp, and is:
h＝L×tanα,2α+β＝180°，
wherein,
h is the vertical distance between the LED light source luminous point and the central axis of the lamp holder;
l is the shortest distance between the LED light source luminous point and the shading sheet;
beta is the light emitting angle of the LED light source.
Step 112, arranging a reflecting surface on a light path of the LED light source irradiated on the lamp holder;
after the reflecting surface is arranged, the light irradiated on the lamp holder is reflected and then is condensed to the ground through the reflecting cup.
The setting methods of the reflecting surface are many, and the inventor researches the setting angle with good reflecting effect through various ways: a reflecting surface is arranged between one end of the lamp holder and one end of the LED light source close to the lamp holder; one end of the lamp holder is positioned at the other side of the central axis of the lamp holder, and one end of the LED light source is positioned at one end close to the lamp holder.
Because the LED automobile lamp is provided with the reflecting cup, the LED automobile lamp is suitable for lamplight at various angles, and the reflecting surface can be an inclined plane or an inclined curved surface.
To enhance the reflection effect, the reflection surface may be polished or coated on the outer surface in some embodiments.
By the method, the shadow area of the LED automobile lamp irradiated on the road can be directly and visually adjusted, so that all or almost all light of the LED light source is projected on the road, and the brightness and the utilization rate of the light are increased.
The following describes an LED car lamp developed according to the method for reducing the shadow of the LED car lamp:
an LED automotive lamp comprising:
the lamp holder 3 is not improved in the invention, aiming at continuously using the existing lamp holder 3 to conveniently replace the halogen lamp or the xenon lamp without other improvements on the automobile and saving the replacement cost.
The cylinder 2, it is connected with lamp stand 3 is perpendicular, also has cylinder 2 structure on current mainstream LED lamp, and prior art can be referred to in concrete effect, connected mode. However, in the present embodiment, although the problem of adjusting the connection point between the post 2 and the lamp holder 3 is described in the above method for increasing the luminous flux, which aims to change the distance between the LED light source 1 and the central axis 5 of the lamp holder 3, the internal components of the lamp actually used in the automobile cannot be adjusted freely, so that in the actual installation of the automobile lamp, the post 2 is usually fixedly connected with the lamp holder 3, and the post 2 and the lamp holder 3 cannot move relatively for different types of LED automobile lamps. The adjustable connection mode is mainly applied to the experimental stage.
The LED light source 1 is arranged on the surface of the column body 2, and the specific connection mode of the LED light source 1 and the column body 2 can be unfolded by referring to the prior art. In improving the luminous flux of the LED automobile lamp, the irradiation range and the shading effect of the light emitted by the LED light source 1 have a large influence on the luminous flux, and the inventor finds that the LED light source 1 is located below the central axis 5, which is beneficial to improving the luminous flux, therefore, in each embodiment of the present invention, the LED light source 1 and the column body 2 are located on one side of the central axis 5 of the lamp holder 3, and as shown in fig. 2, the LED light source 1 is located below the central axis 5.
And the lens bracket covers the lamp holder 3, the column body 2 and the LED light source. The LED automobile lamp is used for light transmission and supporting, and the light transmission mirror is arranged on the light transmission support, and particularly the structure of a mainstream LED automobile lamp can be referred to.
And a light shielding sheet 4 disposed on an inner surface of the lens holder for shielding light. The anti-dazzling screen 4, the column body 2 and the LED light source 1 are all positioned on the same side of the central axis 5 of the lamp holder 3.
The reflection cup belongs to a component of an LED automobile lamp which is commonly configured and can reflect light rays to a road surface.
And a reflecting surface 6, wherein the reflecting surface 6 is arranged between the LED light source 1 and the lamp holder 3, namely the reflecting surface 6 is arranged on the light path of the LED light source 1 irradiating the lamp holder 3. To improve the light reflection effect, the following design may be adopted in some embodiments: two ends of the reflecting surface 6 are respectively connected with one end of the lamp holder 3 and one end of the LED light source 1; one end of the lamp holder 3 is positioned at the other side of the central axis 5 of the lamp holder 3, and one end of the LED light source 1 is positioned at one end close to the lamp holder 3. The reflecting surface 6 can adopt a plane structure or a curved surface structure, and the reflecting surface 6 is a polished surface or the outer surface of the reflecting surface is coated with a film.
FIG. 2 is a diagram of the positional relationship of the lighting assembly of an LED automotive lamp, wherein:
the distance between the luminous point of the LED light source 1 and the central axis 5 of the lamp holder 3 is h;
the column 2 and the LED light source 1 are positioned between the light shading sheet 4 and the lamp holder 3, and the column 2 and the LED light source 1 are positioned between the light shading sheet 4 and the lamp holder 3; the shortest distance between the light emitting point of the LED light source 1 and the light shielding sheet 4 is L. The light emitting point is the closest wafer to the light shielding sheet 4.
The light emitting angle of the LED light source 1 is beta, and h, L and beta satisfy the following formula:
h＝L×tanα,2α+β＝180°。
it should be noted that: the LED light source can be tilted when mounted, but follows the design described above regardless of the angle of tilt.
Through the reasonable design to the light source position for on the emergent light total reflection of LED light or the road surface of penetrating directly, increase the effect of road lighting, thereby promote the light efficiency of product. Meanwhile, the LED shadow area is overlapped with the lamp assembly shadow area, so that the defects of insufficient illumination brightness and the like do not exist.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A method for reducing the illumination shadow of an LED automobile lamp is characterized by comprising the following steps:
moving the column body carrying the LED light source along the lamp holder to enable the LED light source and the column body to be positioned on one side of a central axis of the lamp holder;
adjusting the distance between the LED light source and a shading sheet in the LED automobile lamp to reduce the light projected by the LED light source on the shading sheet; the light shading sheet and the column body are positioned on the same side of the central axis of the lamp holder, and the column body and the LED light source are positioned between the light shading sheet and the lamp holder;
and a reflecting surface is arranged on a light path of the LED light source irradiating the lamp holder, and the reflecting surface is an inclined plane or an inclined curved surface.
2. The method of reducing the illumination shadows of an LED automobile lamp according to claim 1, wherein before moving the post carrying the LED light source along the lamp holder, the method further comprises:
adjusting the light emitting angle of the LED light source;
and connecting the LED light source with the adjusted light-emitting angle to a column inside the LED automobile lamp.
3. The method for reducing the illumination shadow of the LED automobile lamp according to claim 2, wherein the specific calculation formula for reducing the light projected from the LED light source to the lamp shade is as follows:
h＝L×tanα,2α+β＝180°，
wherein,
h is the vertical distance between the LED light source luminous point and the central axis of the lamp holder;
l is the shortest distance between the LED light source luminous point and the shading sheet;
beta is the light emitting angle of the LED light source.
4. The method for reducing the irradiation shadow of the LED automobile lamp according to any one of claims 1 to 3, wherein the step of arranging the reflecting surface on the light path of the LED light source irradiating the lamp holder is as follows: a reflecting surface is arranged between one end of the lamp holder and one end of the LED light source close to the lamp holder; one end of the lamp holder is located on the other side of the central axis of the lamp holder, and one end of the LED light source is close to one end of the lamp holder.
5. The method for reducing the illumination shadow of the LED automobile lamp as claimed in claim 4, wherein after the reflecting surface is arranged on the light path of the LED light source illuminated on the lamp holder, the method further comprises the following steps:
polishing the reflecting surface; or the reflecting surface is subjected to film coating treatment.
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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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| CN105371198A CN105371198A (en) | 2016-03-02 |
| CN105371198B true CN105371198B (en) | 2017-11-28 |
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Citations (3)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2014
- 2014-08-27 CN CN201410428915.2A patent/CN105371198B/en active Active
Patent Citations (3)
| 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 |
| 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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