CN1133552C - Vehicle lamp - Google Patents
Vehicle lamp Download PDFInfo
- Publication number
- CN1133552C CN1133552C CNB971054959A CN97105495A CN1133552C CN 1133552 C CN1133552 C CN 1133552C CN B971054959 A CNB971054959 A CN B971054959A CN 97105495 A CN97105495 A CN 97105495A CN 1133552 C CN1133552 C CN 1133552C
- Authority
- CN
- China
- Prior art keywords
- light
- lampshade
- license plate
- light source
- diffusive regions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/56—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for illuminating registrations or the like, e.g. for licence plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
Abstract
A license plate lamp 10 comprising a light source 12 and a cover lens 14, said cover lens having a first part 14A formed from a diffusion lens portion located to illuminate the part 2A of the license plate 2 closest to said light source and the area below, and a second part formed 14B from a plain lens portion through which light beams are directed to illuminate those parts 2B of the license plate located farthest from said light source and the area above. In this way, uniform illumination of the license plate is achieved. To equalize luminance distribution of a license plate irradiated by a license plate lamp without arranging the license plate lamp by largely separating it from the license plate to the backward side on the license plate lamp provided in the neighbourhood on a diagonally upper and backward point in the middle of an upper side marginal part of the license plate. A diffusion lens part 14A is formed in a region positioned in the neighbourhood of a straight line connecting a light source 12 and an upper end central part 2A (a part nearest to the light source 12 and easy to be brighter) of a license plate 2 to each other on a lens 14 of a license plate lamp 10, and in the meantime, a region positioned in the neighbourhood of a straight line connecting the light source 12 and lower end both side parts 2B (a part farthest from the light source 12 and easy to be dark) of the license plate 2 to each other is made a transparent part 14B. Consequently, incoming beams to the upper end central part 2A are reduced, and irradiated light to the lower end both side parts 2B is not reduced to the utmost.
Description
Automobile license plate lamp is as giving the license plate that is contained in tailstock illumination.If different with the position of licence plate by the brightness that automobile license plate lamp shines on the car plate, then give an example, the driver in the pursuit-type vehicle just is difficult to see clearly the license number of this automobile.
Therefore, automobile license plate lamp should make whole license plate get more as far as possible.
On the other hand, hinder people to see car plate clearly in order not make automobile license plate lamp, automobile license plate lamp should be contained near the car plate periphery.Therefore, bright and darker on the car plate away from the part of lamp near the part of registration mark light.
In order to solve above-mentioned difficult point, existing so far following way: the lampshade inner surface that covers the registration mark light light source is done vexed light processing, makes the output diffusion of light of light source, thereby improves the licence plate lightness distribution.
But this method has following deficiency: be exactly that whole lampshade inner surface all is subjected to vexed light, therefore above-mentioned phenomenon still exists, and the position near registration mark light on the car plate is bright, and is dark away from the position of lamp.In other words, be difficult to make the brightness on the licence plate even with this way.
In view of the foregoing, recommend following method: automobile license plate lamp is placed on licence plate front (back of automobile), and its distance makes Luminance Distribution reach tolerance band (ratio of high-high brightness and minimum brightness is below 20: 1).But the implementation of this method will make length lengthening as much before and after the vehicle body, perhaps shortens the automobile tail storage room or the vehicle seat space is many like this.
In view of the foregoing, the purpose of this invention is to provide a kind of car light, it does not leave no choice but car light is contained in from the far sorrow of car plate makes on the licence plate brightness even again.
Be the registration mark light of realizing that above-mentioned purpose of the present invention provided, the diffusion effect of its lampshade each several part is inequality.Specifically, be contained near the car light that illuminates car plate the car plate periphery and comprise a light source; With a lampshade that covers described light source.Described lampshade comprises: by first district that the lampshade diffusive regions constitutes, this diffusive regions is positioned at described light source and car plate near the line of approaching described source region; Form with second district that is made of the simple glass district, this simple glass district is positioned at described light source and car plate near the line away from described source region.
The implication of so-called " diffusive regions " is not confined on the diffuser structure or on diffuse direction, and all are that requirement all is the functional component of diffusive regions to the diffusion effect.
Car plate is subjected to the acute irradiation from the incident light of light source near the Lights section (below be called " zone of approach ") in general, so the brightness height.On the other hand, on the licence plate from light source farthest part (below be called " far field ") be not subjected to the acute irradiation of the incident light of light source, so brightness is low.
But as mentioned above, car light of the present invention, first district of its lampshade is a diffusive regions, and it is positioned near the line of the zone of approach of light source and car plate, and therefore, the incident beam that is mapped to the zone of approach of licence plate has reduced, the result, the brightness of zone of approach reduces.On the other hand, second district of lampshade is the simple glass part, and its is near the line in the far field of light source and licence plate, so the light beam that is mapped to the far field of licence plate do not reduce, so brightness is higher.So the Luminance Distribution in the whole zone of car plate is even substantially.
Therefore, use car light of the present invention, need not just can make licence plate obtain uniform irradiation the place that registration mark light is put into away from car plate.
As mentioned above, the present invention is not limited the structure of diffusive regions.For example, the lampshade surface can be carried out vexed light and handled or granulated processed, also can make step, perhaps this several method suitably in conjunction with the diffusive regions that forms lampshade.
Above-mentioned car light should be placed near the car plate periphery, but special restriction is done in its position.But had better be placed on about car plate upper periphery central position to the position of car light, the diffusive regions of step is with the output light vertical direction diffusion of light source, and the simple glass part then is positioned at the and arranged on left and right sides of diffusive regions.At this moment, whole car plate evenly can be illuminated basically with single registration mark light.
Fig. 1 is the car light sectional view of the preferred embodiment of the present invention;
Fig. 2 is the view of watching along arrow II direction among Fig. 1;
Fig. 3 is the sectional view of above-mentioned car light lampshade;
Fig. 4 is the view of watching along arrow IV direction among Fig. 3; And
Fig. 5 is sectional view that improves embodiment of the present invention.
Referring now to the description of drawings preferred embodiment of the present invention.
Fig. 1 is the sectional view that embodies car light 10 of the present invention, and Fig. 2 is the view of watching along arrow II direction among Fig. 1.
As shown in Figures 1 and 2, embodiment of the invention car light 10 is registration mark lights that a pair of car plate 2 that is contained in the vehicle body tail end is done illumination.This lamp 10 is positioned at car plate 2 upper limbs central authorities back and tiltedly goes up the angle.
Automobile license plate lamp 10 comprises: a light source (wedge shape lamp socket bulb) 12 wherein distributes to (being vehicle width direction) about filament 12a edge; One lampshade 14 is semisphere basically, covers light source 12; One socket 16 is fixed on light source 12 and lampshade 14 on the car body member 4; And a pair of contact 18.
Fig. 3 is the sectional view of above-mentioned lampshade 14.Fig. 4 is the view along arrow IV direction among Fig. 3.
Shown in Fig. 3 and 4, the domed ends of lampshade 14 comprises a diffusive regions 14A and a pair of simple glass part 14B (narration in the back).
The second diffusive regions 14A2 is corresponding to the zone than the more close lampshade of the first diffusive regions 1,4A1 14 fronts.This second diffusive regions 14A2 carries out granulated processed with lampshade 14 inside faces and remakes vexed light then and handle and obtain.The light beam that passes the second diffusing glass district 14A2 is by strong scattering, because as mentioned above, 14A2 inside face in this district had made granulation and vexed light is handled.
Slightly by the zone of back, its area is the summation of first, second diffusive regions 14A1 and 14A2 to the 3rd diffusive regions 14A3 corresponding to lampshade 14 nadirs.Similar with the second diffusive regions 14A2, the 3rd diffusive regions 14A3 inside face is also done earlier to do vexed light processing after the granulated processed.Therefore, the light beam that passes the 3rd diffusive regions 14A3 is also by scattering consumingly, because as mentioned above, diffusive regions 14A3 inside face also made granulation and vexed light is handled.
A pair of simple glass district 14B (above mentioned) is positioned at the left and right sides of above-mentioned diffusive regions 14A.From Fig. 4 as seen, diffusive regions 14A and general area 14B are disymmetric.
Shown in Fig. 1 and 2, the first diffusive regions 14A1 of lampshade is positioned near the upper limb middle part 2A line of light source 12 and licence plate 2 the most close light sources 12, and the neighboring area that is lower than the zone of mentioning for the first time.Constitute six glass step 14A1a of the first diffusive regions 14A1, their ratio of refraction is to stipulate that so promptly as shown in Figure 1, light is not almost thrown into upper limb 2A.In this connection, deflecting light beams has been thrown into from light source 12 car plate 2 central authorities (from left and right directions) bottom farthest.
On the other hand, as shown in Figure 2, general area 14B corresponding to light source 12 and car plate 2 near line between the 2B of the two ends, the left and right sides of light source lower edge farthest, on the zone of mentioning for the first time, the result, light beam seldom is mapped to this two ends, left and right sides 2B and upper area thereof.
The Action Specification of the foregoing description is in following:
In this embodiment, registration mark light 10 is positioned at the top of retreading of car plate 2 upper limb central authorities.In this case generally speaking, the incident beam irradiation that middle part, car plate 2 upper limb districts 2A is come out from light source 12, illumination height, thereby brightness height.On the other hand, the incident beam irradiation that car plate lower edge left and right sides two ends 2B is come out from light source 12, illumination is little thereby brightness is low.
In the present embodiment, the first diffusive regions 14A1 of lampshade is corresponding to light source 12 and car plate 2 near the line near the 2A of upper limb central authorities of light source 12, and mentions the surrounding zone below the zone for the first time.Therefore, the incident beam that shines car plate upper limb middle part 2A reduces, thereby its brightness also reduces.In addition, the ratio of refraction of forming six glass step 14A1a of the first diffusive regions 14A1 is to stipulate like this, make light beam be mapped to car plate 2 upper limbs middle part 2A hardly, and acute irradiation is to the bottom of car plate 2 from light source 12 middle part (left and right directions) farthest.Therefore, the brightness of (with regard to left and right directions) is more even in the middle of the licence plate.The step 14A1a of lampshade made vexed light and handled, and the light beam that therefore passes these steps 14A1a is scattered.These characteristics have reduced the irregularity that is the emission light beam that step causes owing to lampshade 14 inside faces.
In the present embodiment, simple glass district 14B be positioned near light source 12 and two ends, the car plate 2 lower edge left and right sides 2B line with and top external zones (lampshade district).Therefore, the light that is mapped to two ends, the left and right sides (the two ends 2B that comprises lower edge) not a little less than, brightness is strong.
On lampshade 14, the second diffusive regions 14A2 that handled by granulation and vexed light is positioned near the place ahead of the first diffusive regions 14A1, thus car plate be not subjected to pass this part of enough irradiations of light beam of the first diffusive regions 14A1 and general area 12B by uniform irradiation.
On above-mentioned lampshade 14; the 3rd diffusive regions 14A3 does not have any contribution to the irradiance of car plate 2; but because the inside face of this district 14A3 is handled by granulation and vexed light also, thus pass the 3rd diffusive regions 14A3 and the light beam that is scattered also conduct shine the light beam of car plate indirectly.
As seen from above-mentioned, though the position of number plate lamp 10 is near car plate 2 in the present embodiment, the luminance distribution in car plate 2 whole zones is uniform basically.
In addition, in the present embodiment, there is no need lamp is placed on from car plate 2 places far away and make car plate 2 integral body be subjected to uniform irradiation, in this connection, an automobile license plate lamp 10 has only been used in the realization of this effect.
But much less, because vehicle body and other situation differences, also available two or two above number plate lamps, as shown in Figure 5.
Fig. 5 illustrates two number plate lamps 10, and they are positioned near the oblique rear at middle part, limit, car plate 2 left and right sides.At this moment, two number plate lamps 10 are arranged in a manner described about.2A ' the district of car plate 10 from lamp 10 recently and 2B ' district from lamp 10 farthest.A pair of simple glass district 14B ' is arranged on the lampshade of every registration mark light 10, so the light that penetrates of light source 12 passes simple glass district 14B ' and shines 2B ' district.At this moment, the illumination angle that is mapped to following middle part 2B ' is littler than the illumination angle in the 2B district at lower edge shown in Figure 2 two ends, so should be with each simple glass district 14B ' than the more close lampshade of simple glass district 14B 14 centers among Fig. 2.
Claims (10)
1. one kind is contained near the car light that supplies illuminating license plate to use of license plate periphery, and it comprises:
One light source; With
One covers the lampshade of described light source, and described lampshade comprises:
By first district that the lampshade diffusive regions constitutes, this diffusive regions is positioned at described light source and car plate near the line of approaching described source region; With
Second district that is made of the simple glass district forms, and this simple glass district is positioned at described light source and car plate near the line away from described source region.
2. car light as claimed in claim 1 is characterized in that, described first district of described lampshade handles through vexed light.
3. car light as claimed in claim 1 is characterized in that, described first district of described lampshade is through granulated processed.
4. car light as claimed in claim 1 is characterized in that, in described first district of described lampshade step is arranged.
5. car light as claimed in claim 1 is characterized in that, described first district of described lampshade combines by two in vexed light processing and granulated processed and the step at least at least.
6. car light as claimed in claim 1 is characterized in that, the described diffusive regions of described lampshade comprises first, second, third diffusive regions.
7. car light as claimed in claim 6 is characterized in that, described first diffusive regions is corresponding to the zone that extends to the lampshade front on the described lampshade from the lampshade nadir.
8. car light as claimed in claim 6 is characterized in that, described second diffusive regions is corresponding to the zone than the more close lampshade of described first diffusive regions front.
9. car light as claimed in claim 6 is characterized in that, slightly by the zone of back, the area of described the 3rd diffusive regions is described first, second diffusive regions area sum to described the 3rd diffusive regions corresponding to nadir on the described lampshade.
10. car light as claimed in claim 1, it is characterized in that described lamp is an independent lamp, is located substantially on car plate upper limb central authorities, the described lampshade diffusive regions of step is the output light of the described light source of scattering vertically, is a pair of simple glass district in the described diffusive regions left and right sides.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP166737/1996 | 1996-06-06 | ||
| JP16673796A JP3222383B2 (en) | 1996-06-06 | 1996-06-06 | Vehicle lighting |
| JP166737/96 | 1996-06-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1172037A CN1172037A (en) | 1998-02-04 |
| CN1133552C true CN1133552C (en) | 2004-01-07 |
Family
ID=15836826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB971054959A Expired - Fee Related CN1133552C (en) | 1996-06-06 | 1997-06-04 | Vehicle lamp |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3222383B2 (en) |
| CN (1) | CN1133552C (en) |
| GB (1) | GB2314151B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10244876A (en) * | 1997-03-04 | 1998-09-14 | Koito Mfg Co Ltd | License plate lamp |
| JP4369928B2 (en) * | 2006-02-17 | 2009-11-25 | アイ・ケイ・ケイ株式会社 | Manufacturing method of vehicle lamp cover, vehicle lamp cover, and vehicle lamp equipped with the same |
| JP5503109B2 (en) * | 2008-02-06 | 2014-05-28 | 株式会社小糸製作所 | License plate lamp |
| CN106152001B (en) * | 2015-03-26 | 2018-10-16 | 市光法雷奥（佛山）汽车照明系统有限公司 | License plate lamp for motor vehicles and the motor vehicles comprising the license plate lamp |
| JP2021113882A (en) | 2020-01-17 | 2021-08-05 | 株式会社東海理化電機製作所 | Lens and license lamp |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0439077Y2 (en) * | 1986-11-28 | 1992-09-11 | ||
| US5067057A (en) * | 1991-02-28 | 1991-11-19 | Ford Motor Company | Multiple parabola license plate lamp |
-
1996
- 1996-06-06 JP JP16673796A patent/JP3222383B2/en not_active Expired - Fee Related
-
1997
- 1997-05-28 GB GB9710989A patent/GB2314151B/en not_active Expired - Fee Related
- 1997-06-04 CN CNB971054959A patent/CN1133552C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB2314151B (en) | 1998-04-15 |
| JPH09323587A (en) | 1997-12-16 |
| GB2314151A (en) | 1997-12-17 |
| JP3222383B2 (en) | 2001-10-29 |
| GB9710989D0 (en) | 1997-07-23 |
| CN1172037A (en) | 1998-02-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |