JPH05166402A - Compound headlamp for vehicle - Google Patents
Compound headlamp for vehicleInfo
- Publication number
- JPH05166402A JPH05166402A JP3350489A JP35048991A JPH05166402A JP H05166402 A JPH05166402 A JP H05166402A JP 3350489 A JP3350489 A JP 3350489A JP 35048991 A JP35048991 A JP 35048991A JP H05166402 A JPH05166402 A JP H05166402A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- light source
- headlamp
- vehicle
- back surface
- 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.)
- Granted
Links
Classifications
-
- 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
- F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は車両用の前照灯に関する
ものであり、詳細には前照灯、フォグランプ、車幅灯或
いは方向指示灯など複数の灯具が一面のレンズの背面に
配置された構成とされた前照灯に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle headlamp, and more particularly, a plurality of lamps such as a headlight, a fog lamp, a sideways light or a direction indicator light are arranged on the back surface of a lens. The present invention relates to a headlight configured as described above.
【０００２】[0002]
【従来の技術】従来のこの種の複合前照灯９０の構成の
例を示すものが図４であり、一面として形成されたレン
ズ９１の背面には、フォグ用光源９２ａを有するフォグ
ランプ灯具９２、走行用光源９３ａを有する走行ビーム
前照灯灯具９３、すれ違い用光源９４ａを有するすれ違
いビーム前照灯灯具９４及び車幅用光源９５ａを有する
車幅灯灯具９５が配置され、夫々の灯具９２〜９５は自
動車の走行条件などにより必要とされるものが選択され
点灯されるものとされ、通常の使用状態の大部分の場
合、すれ違いビーム前照灯灯具９４と車幅灯灯具９５と
が点灯されるものとなっている。2. Description of the Related Art FIG. 4 shows an example of the configuration of a conventional composite headlamp 90 of this type. A fog lamp lamp 92 having a fog light source 92a is provided on the back surface of a lens 91 formed as one surface. A traveling beam headlamp lamp 93 having a traveling light source 93a, a passing beam headlamp lamp 94 having a passing light source 94a, and a vehicle width lamp 95 having a vehicle width light source 95a are arranged, and the respective lamps 92 to 95 are arranged. Is selected and turned on depending on the driving conditions of the automobile, etc. In most cases of normal use, the passing beam headlight lamp 94 and the side-width lamp 95 are turned on. It has become a thing.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、複合前
照灯９０が前記した一面のレンズ９１を共有する構成と
されたことで、例えばすれ違いビーム前照灯灯具９４の
点灯を開始した後には、すれ違い用光源９４ａによる発
熱で複合前照灯９０内部に吸着されていた水分が蒸発し
て複合前照灯９０内部の湿度が上昇し、前記レンズ９１
の背面の全面が比較的に高い湿度の空気に接する状態と
なる。However, since the compound headlamp 90 is configured to share the one-sided lens 91 described above, for example, after the lighting of the passing beam headlamp lamp 94 is started, the passing headlight is passed. The heat generated by the light source 94a for use evaporates the moisture adsorbed inside the composite headlamp 90, and the humidity inside the composite headlamp 90 rises.
The entire back surface of the is in contact with air of relatively high humidity.
【０００４】この状態において走行を開始すると前記レ
ンズ９１は全面に均一な冷却風を受け温度が低下するも
のとなるが、すれ違い用光源９４ａにより輻射熱を受け
ている部分は温度低下の割合が低く高温が維持されるも
のとなるので、前記レンズ９１の背面には温度差を生
じ、点灯が行われていない例えばフォグランプ灯具９
２、走行ビーム前照灯灯具９３及び点灯が行われていて
も輻射熱の量が少ない車幅灯灯具９５の前面となるレン
ズ９１の背面に結露を生じてレンズ９１面の曇りとな
り、これにより複合前照灯９０の品質感を損なう問題点
を生じ、この点の解決が課題とされるものとなってい
た。When the vehicle starts running in this state, the temperature of the lens 91 is lowered by receiving uniform cooling air over the entire surface, but the portion receiving the radiant heat from the passing light source 94a has a low rate of temperature drop and is high in temperature. Therefore, the temperature difference is generated on the back surface of the lens 91, and the lens 91 is not lit, for example, the fog lamp lamp 9
2. Condensation is generated on the back surface of the lens 91, which is the front surface of the traveling beam headlight lamp 93 and the side-width lamp lamp 95 with a small amount of radiant heat even when the lamp is turned on, and the lens 91 surface becomes cloudy. There is a problem that the quality of the headlight 90 is impaired, and a solution to this problem has been a problem.
【０００５】[0005]
【課題を解決するための手段】本発明は前記した従来の
課題を解決するための具体的手段として、一面のレンズ
の背面に夫々に光源を有する複数の灯具が配置されてな
る車両用複合前照灯において、前記レンズは夫々の前記
光源から輻射される熱量と夫々の前記光源の使用頻度と
に応じて、高温で且つ使用頻度の高い部分では薄く、低
温及び使用頻度の低い部分では厚く成るように肉厚が調
整されていることを特徴とする車両用複合前照灯を提供
することで、部分的に結露を生じないようにして課題を
解決するものである。As a concrete means for solving the above-mentioned conventional problems, the present invention is a composite front vehicle for which a plurality of lamps each having a light source are arranged on the back surface of one lens. In the illuminating lamp, the lens becomes thin at a high temperature and frequently used portion and becomes thick at a low temperature and infrequently used portion according to the amount of heat radiated from each of the light sources and the usage frequency of each of the light sources. By providing a composite headlight for a vehicle, the thickness of which is adjusted as described above, the problem is solved by preventing partial dew condensation.
【０００６】[0006]
【実施例】つぎに、本発明を図に示す一実施例に基づい
て詳細に説明する。図１に符号１で示すものは本発明に
係る複合前照灯であり、この複合前照灯１は一面のレン
ズ２の背面に、フォグ用光源３ａを有するフォグランプ
灯具３、走行用光源４ａを有する走行ビーム前照灯灯具
４、すれ違い用光源５ａを有するすれ違いビーム前照灯
灯具５及び車幅用光源６ａを有する車幅灯灯具６など複
数の灯具が配置されるものとされている点は従来例のも
のと同様である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail based on an embodiment shown in the drawings. Reference numeral 1 in FIG. 1 is a composite headlamp according to the present invention. The composite headlamp 1 includes a fog lamp lamp 3 having a fog light source 3a and a traveling light source 4a on the back surface of a lens 2 on one side. It is supposed that a plurality of lamps such as the traveling beam headlamp 4 having the traveling beam, the passing beam headlamp 5 having the light source 5a for passing and the sideways lamp 6 having the light source 6a for vehicle width are arranged. It is similar to the conventional example.
【０００７】しかしながら、前記レンズ２は本発明によ
り、夫々の前記灯具３〜６の光源３ａ〜６ａから受ける
輻射熱の量と、これらの灯具３〜６の使用頻度とを勘案
して、それらの灯具３〜６が対応する部分の肉厚に差を
設けるものとし、自動車の走行に伴う冷却風によるレン
ズ２表面の冷却作用により、このレンズ２の背面が均一
な温度と成るように図られている。However, according to the present invention, the lens 2 takes into consideration the amount of radiant heat received from the light sources 3a to 6a of the respective lamps 3 to 6 and the frequency of use of these lamps 3 to 6 in consideration of those lamps. The thicknesses of the corresponding portions 3 to 6 are different from each other, and the back surface of the lens 2 has a uniform temperature due to the cooling action of the surface of the lens 2 by the cooling air accompanying the traveling of the automobile. ..
【０００８】以下に上記の構成を具体例により更に詳細
に説明を行えば、一般的にこの種の複合前照灯１におい
て光源の消費電力は大略、走行用光源４ａ＞すれ違い用
光源５ａ＞フォグ用光源３ａ＞車幅用光源６ａの順であ
り、これに対して使用頻度は大略、車幅用光源６ａ＞す
れ違い用光源５ａ＞フォグ用光源３ａ＞走行用光源４ａ
の順となる。The above structure will be described in more detail below with reference to specific examples. Generally, the power consumption of the light source in the composite headlamp 1 of this type is roughly equal to that of the traveling light source 4a> the passing light source 5a> fog. Light source for vehicle 3a> light source for vehicle width 6a, and the frequency of use is roughly the same, that is, light source for vehicle width 6a> light source for passing 5a> light source for fog 3a> light source for traveling 4a
Will be in order.
【０００９】ここで、本発明においては、基本的に前記
夫々の光源３ａ〜６ａからの輻射熱による温度上昇を前
記レンズ２の肉厚を薄くすることで前記した冷却風で冷
却しレンズ２の背面の温度を均一化して、部分的に結露
を生ずることの防止を図るものであるが、加えて、この
種の複合前照灯１の使用条件も加味し、現実に合致させ
るものとしている。Here, in the present invention, basically, the temperature rise due to the radiant heat from each of the light sources 3a to 6a is cooled by the cooling air by thinning the thickness of the lens 2, and the rear surface of the lens 2 is cooled. In order to prevent the partial formation of dew condensation, the above conditions are used, and in addition, the usage conditions of this type of compound headlamp 1 are taken into consideration so as to make it actually match.
【００１０】即ち、実際の使用状態においては、上記に
も述べたように夜間走行のほぼ全てがすれ違いビーム前
照灯灯具５の点灯で行われ、これにより走行用光源４ａ
が点灯されることは極めて稀である。よって、本発明に
おいては前記走行用光源４ａの消費電力が大きくレンズ
２の背面に輻射熱を与えて温度上昇させる作用が認めら
れるにも係わらず、使用頻度の見地から前記走行用光源
４ａ、即ち、走行ビーム前照灯灯具４に対応する部分の
レンズ２の肉厚は厚いものとされている。That is, in the actual use state, as described above, almost all of the nighttime traveling is performed by turning on the passing beam headlamp lamp 5, whereby the traveling light source 4a.
Is rarely lit. Therefore, in the present invention, although the power consumption of the traveling light source 4a is large and the action of applying radiant heat to the back surface of the lens 2 to raise the temperature is recognized, the traveling light source 4a, that is, The wall thickness of the lens 2 in the portion corresponding to the traveling beam headlight lamp 4 is made thick.
【００１１】これに対し、前記車幅灯灯具６に対応する
部分のレンズ２においては、確かに前記車幅灯灯具６は
上記にも説明したように使用頻度は高いものであるが、
車幅用光源６ａが小電力であり、前記レンズ２の背面に
それ程の輻射熱を与えて温度上昇を生じさせることが無
いので、この部分に対応するレンズ２の肉厚も比較的に
厚いものとされている。On the other hand, in the portion of the lens 2 corresponding to the side-width light fixture 6, the side-width light fixture 6 is certainly used frequently as described above.
Since the vehicle width light source 6a has a small electric power and does not give rise to a temperature rise by giving such radiant heat to the back surface of the lens 2, the lens 2 corresponding to this portion is also relatively thick. Has been done.
【００１２】次いで、上記の構成とした本発明の作用及
び効果について説明を行えば、前記レンズ２の肉厚が夫
々の光源３ａ〜６ａの生ずる輻射熱の量と、同じ光源３
ａ〜６ａの使用頻度とに基づき調整され、現実の使用条
件においては前記レンズ２の背面の温度が均一なものと
されたことで、部分的な結露の発生は生じないものとな
る。Next, the operation and effect of the present invention having the above-mentioned structure will be described. The thickness of the lens 2 is the same as the amount of radiant heat generated by each of the light sources 3a to 6a.
The temperature of the back surface of the lens 2 is made uniform under the actual use condition, so that the partial condensation does not occur.
【００１３】また、仮にこの状態で結露を生ずるものと
なっても、前記レンズ２の背面の温度が均一なものとさ
れたことで、結露はレンズ２の背面の全面に均一に発生
するものとなるので、複合前照灯１内の水分がレンズ２
の全面に分散されて極めて軽微な状態の結露となり、従
来例のように一部分に集中した強度の結露となることは
なく、実質上に無視できる範囲内とすることができる。Further, even if dew condensation occurs in this state, since the temperature on the back surface of the lens 2 is made uniform, the dew condensation is uniformly generated on the entire back surface of the lens 2. Therefore, the water inside the compound headlight 1 will be absorbed by the lens 2
Is dispersed over the entire surface to form an extremely slight amount of dew condensation, which does not form a concentrated dew condensation as in the conventional example, and can be substantially within a negligible range.
【００１４】図２及び図３に示すものは本発明の別な実
施例であり、前の実施例がレンズ２の肉厚をほぼ灯具３
〜６の単位として調整してステップ状に変化させていた
のに対し、この実施例においては、先ず図２に示すよう
にレンズ２０を複合前照灯１に取付け、前に説明した条
件に基づいて光源を点灯してレンズ２０の背面の温度分
布を測定し等温度曲線Ｔを求め、そのデータに基づいて
レンズ２０の肉厚を最も高温となる位置が最薄肉部min
となり、最も低温となる位置が最厚肉部max となるよう
に連続的に変化させたものであり、このようにすること
で前記複合前照灯１内における空気の対流による温度差
などの条件も含ませることが可能となり、前記した目的
の達成に一層の効果を奏するものとなる。2 and 3 show another embodiment of the present invention. In the previous embodiment, the thickness of the lens 2 is approximately equal to that of the lamp 3.
In the present embodiment, the lens 20 is first attached to the compound headlamp 1 as shown in FIG. 2, and the condition is adjusted based on the previously described conditions. The light source is turned on to measure the temperature distribution on the back surface of the lens 20 and the isothermal curve T is obtained.
Therefore, the lowest temperature position is continuously changed so as to become the thickest wall portion max. By doing so, conditions such as temperature difference due to convection of air in the composite headlamp 1 are obtained. It is also possible to include the above, and it is possible to exert a further effect in achieving the above-mentioned object.
【００１５】尚、この発明を成すための発明者による試
作及び検討の結果では、通常の乗用車に採用されている
この種の複合前照灯１において、前記レンズ２に樹脂レ
ンズを選択した場合、このレンズ２の肉厚として２〜６
mmの範囲を設定することで好結果が得られることが確認
された。また、実際の実施に当たり前記複合前照灯１と
して、上記に説明した以外の組合わせのものにおいても
同様に好結果が得られることが確認されている。According to the results of trial manufacture and examination by the inventor for forming the present invention, in the case of selecting a resin lens as the lens 2 in the compound headlamp 1 of this type which is adopted in an ordinary passenger car, The thickness of this lens 2 is 2 to 6
It was confirmed that good results were obtained by setting the range of mm. In addition, in actual implementation, it has been confirmed that similar results can be obtained even when the composite headlight 1 is a combination other than those described above.
【００１６】[0016]
【発明の効果】以上に説明したように本発明により、レ
ンズは夫々の光源から輻射される熱量と夫々の前記光源
の使用頻度とに応じて、高温で且つ使用頻度の高い部分
では薄く、低温及び使用頻度の低い部分では厚く成るよ
うに肉厚が調整されている車両用複合前照灯としたこと
で、レンズ背面の温度を均一なものとし、これにより部
分的に結露を生じないものとして、観者に品質感を損な
うような違和感を生じさせることをなくし、以て、この
種の車両用複合前照灯の品質の向上に極めて優れた効果
を奏するものである。As described above, according to the present invention, the lens is thin at a high temperature and a high frequency at a high frequency depending on the amount of heat radiated from each light source and the frequency of use of the light source. In addition, by using a compound headlight for vehicles whose thickness is adjusted so that it becomes thicker in the less frequently used part, the temperature on the back surface of the lens is made uniform, and as a result, dew condensation does not occur partially The present invention has an extremely excellent effect in improving the quality of this type of vehicle composite headlight by eliminating the feeling of strangeness that impairs the viewer's sense of quality.
【図１】 本発明に係る車両用複合前照灯の一実施例を
示す断面図である。FIG. 1 is a sectional view showing an embodiment of a vehicle composite headlamp according to the present invention.
【図２】 同じく本発明の別の実施例の形成方法を示す
説明図である。FIG. 2 is an explanatory diagram showing a forming method according to another embodiment of the present invention.
【図３】 同じく本発明の別の実施例を要部で示す断面
図である。FIG. 3 is a sectional view showing the main part of another embodiment of the present invention.
【図４】 従来例を示す断面図である。FIG. 4 is a cross-sectional view showing a conventional example.
１……複合前照灯 ２、２０……レンズ ３……フォグランプ灯具 ３ａ……フォグ用光源 ４……走行ビーム前照灯灯具 ４ａ……走行用光源 ５……すれ違いビーム前照灯灯具 ５ａ……すれ違い用光源 ６……車幅灯灯具 ６ａ……車幅用光源 1 ... Composite headlight 2, 20 ... Lens 3 ... Fog lamp light fixture 3a ... Fog light source 4 ... Travel beam headlamp light fixture 4a ... Travel light source 5 ... Passing beam headlamp light fixture 5a ... … Light source for passing 6 …… Car width light fixture 6a …… Light source for car width
Claims (1)
る複数の灯具が配置されてなる車両用複合前照灯におい
て、前記レンズは夫々の前記光源から輻射される熱量と
夫々の前記光源の使用頻度とに応じて、高温で且つ使用
頻度の高い部分では薄く、低温及び使用頻度の低い部分
では厚く成るように肉厚が調整されていることを特徴と
する車両用複合前照灯。1. A composite headlamp for a vehicle, wherein a plurality of lamps each having a light source are arranged on the back surface of a lens on one surface, wherein the lens has the amount of heat radiated from each of the light sources and the amount of heat of each of the light sources. A composite headlamp for a vehicle, wherein the wall thickness is adjusted to be thin at a high temperature and frequently used portion and thick at a low temperature and infrequently used portion according to the frequency of use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35048991A JP3222171B2 (en) | 1991-12-11 | 1991-12-11 | Combined headlights for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35048991A JP3222171B2 (en) | 1991-12-11 | 1991-12-11 | Combined headlights for vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05166402A true JPH05166402A (en) | 1993-07-02 |
| JP3222171B2 JP3222171B2 (en) | 2001-10-22 |
Family
ID=18410838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35048991A Expired - Fee Related JP3222171B2 (en) | 1991-12-11 | 1991-12-11 | Combined headlights for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3222171B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5353204A (en) * | 1993-03-08 | 1994-10-04 | Koito Manufacturing Co., Ltd. | Vehicular headlamp assembly having auxiliary lamp |
| US5692824A (en) * | 1994-10-17 | 1997-12-02 | Koito Manufacturing Co., Ltd. | Vehicular clearance lamp having improved lateral illumination |
| US7230459B2 (en) * | 2004-06-30 | 2007-06-12 | Stmicroelectronics, Inc. | Static frequency divider for microwave applications |
| JP2009227234A (en) * | 2008-03-25 | 2009-10-08 | Daihatsu Motor Co Ltd | Lighting device for vehicle |
| CN106322277A (en) * | 2016-09-29 | 2017-01-11 | 北京汽车股份有限公司 | Headlight for vehicle and vehicle comprising headlight |
| CN110894930A (en) * | 2019-12-03 | 2020-03-20 | 西安电子科技大学芜湖研究院 | Antifog car lamps and lanterns of high-efficient heat dissipation |
| WO2022063416A1 (en) * | 2020-09-28 | 2022-03-31 | HELLA GmbH & Co. KGaA | Cover lens for a vehicle lighting device |
-
1991
- 1991-12-11 JP JP35048991A patent/JP3222171B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5353204A (en) * | 1993-03-08 | 1994-10-04 | Koito Manufacturing Co., Ltd. | Vehicular headlamp assembly having auxiliary lamp |
| US5692824A (en) * | 1994-10-17 | 1997-12-02 | Koito Manufacturing Co., Ltd. | Vehicular clearance lamp having improved lateral illumination |
| US7230459B2 (en) * | 2004-06-30 | 2007-06-12 | Stmicroelectronics, Inc. | Static frequency divider for microwave applications |
| JP2009227234A (en) * | 2008-03-25 | 2009-10-08 | Daihatsu Motor Co Ltd | Lighting device for vehicle |
| CN106322277A (en) * | 2016-09-29 | 2017-01-11 | 北京汽车股份有限公司 | Headlight for vehicle and vehicle comprising headlight |
| CN106322277B (en) * | 2016-09-29 | 2019-04-30 | 北京汽车股份有限公司 | Headlight for vehicle and the vehicle with it |
| CN110894930A (en) * | 2019-12-03 | 2020-03-20 | 西安电子科技大学芜湖研究院 | Antifog car lamps and lanterns of high-efficient heat dissipation |
| WO2022063416A1 (en) * | 2020-09-28 | 2022-03-31 | HELLA GmbH & Co. KGaA | Cover lens for a vehicle lighting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3222171B2 (en) | 2001-10-22 |
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