JP2000106008A - Resin transparent lens in vehicle lighting fixture - Google Patents
Resin transparent lens in vehicle lighting fixtureInfo
- Publication number
- JP2000106008A JP2000106008A JP10277356A JP27735698A JP2000106008A JP 2000106008 A JP2000106008 A JP 2000106008A JP 10277356 A JP10277356 A JP 10277356A JP 27735698 A JP27735698 A JP 27735698A JP 2000106008 A JP2000106008 A JP 2000106008A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- gate
- transparent lens
- resin
- mark
- 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
- 239000011347 resin Substances 0.000 title claims abstract description 25
- 229920005989 resin Polymers 0.000 title claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims abstract description 16
- 238000007689 inspection Methods 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims description 8
- 239000004417 polycarbonate Substances 0.000 description 6
- 238000005315 distribution function Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 229920000515 polycarbonate Polymers 0.000 description 3
- -1 for example Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
- B29C2045/0027—Gate or gate mark locations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0016—Lenses
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば自動車のヘ
ッドランプやフォグランプ等の車両用灯具における樹脂
製の素通しレンズに係り、特に、その樹脂製の素通しレ
ンズを成形する金型の構造が簡単であり、かつ、成形品
である樹脂製の素通しレンズの品質が向上された車両用
灯具における樹脂製の素通しレンズに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent lens made of resin in a vehicular lamp such as a headlamp or a fog lamp of an automobile. In particular, the structure of a mold for molding the transparent resin lens is simple. The present invention relates to a resin-made transparent lens in a vehicular lamp in which the quality of a resin-made transparent lens as a molded product is improved.
【０００２】[0002]
【従来の技術】例えば自動車のヘッドランプやフォグラ
ンプ等の車両用灯具は、一般に、ランプハウジング及び
樹脂製の素通しレンズにより灯室が画成されており、そ
の灯室内に、光源バルブと、その光源バルブからの光を
素通しレンズ側に反射させる反射面とがそれぞれ配置さ
れてなるものである。光源バルブを点灯すると、その光
源バルブからの光が反射面で素通しレンズ側に反射さ
れ、その反射光が素通しレンズを透過して外部に所定の
配光パターンで照射される。2. Description of the Related Art For example, in a vehicle lamp such as a headlamp or a fog lamp of an automobile, a lamp chamber is generally defined by a lamp housing and a transparent lens made of resin, and a light source bulb and a light source are provided in the lamp chamber. And a reflecting surface for passing light from the bulb through and reflecting the light toward the lens. When the light source bulb is turned on, light from the light source bulb is transmitted through the reflection surface to the lens side, and the reflected light is transmitted through the transparent lens and irradiated to the outside in a predetermined light distribution pattern.
【０００３】上述の車両用灯具においては、外部に照射
する光の配光機能を、反射面（所謂、マルチリフレク
タ）に、若しくは、灯室内に配置された他のレンズ（所
謂、インナーレンズであって、内面又は及び外面に光制
御光学要素群が設けられているインナーレンズ）に、設
けているものが多い。この場合、上述のレンズ（インナ
ーレンズを備えるものはアウターレンズ）は、素通しと
なり、配光機能を備えていない。しかも、上述の車両用
灯具に使用されるレンズは樹脂製のものが多い。In the above-mentioned vehicle lamp, the light distribution function of the light to be radiated to the outside is provided by a reflecting surface (a so-called multi-reflector) or another lens (a so-called inner lens) arranged in a lamp room. In many cases, the inner lens or the inner lens on which the light control optical element group is provided on the outer surface is provided. In this case, the above-described lens (an outer lens is provided with an inner lens) is transparent and does not have a light distribution function. In addition, lenses used in the above-mentioned vehicle lamps are often made of resin.
【０００４】一方、上述の車両用灯具に使用される樹脂
製の素通しレンズにおいては、表面上でかつ光軸上に、
車検テスターに必要なセンターマーク（光源バルブの中
心位置を示すマーク）が設けられている。このセンター
マークは、一般に、小円形の凹部や凸部からなる。[0004] On the other hand, in a transparent lens made of resin used for the above-mentioned vehicular lamp, on the surface and on the optical axis,
A center mark (a mark indicating the center position of the light source bulb) required for the vehicle inspection tester is provided. The center mark is generally formed of a small circular concave portion or convex portion.
【０００５】[0005]
【発明が解決しようとする課題】ところが、上述の従来
の車両用灯具における樹脂製の素通しレンズは、ゲート
により形成されるゲートマークが目立たない位置、例え
ば、レンズの端面に位置しているために、成形する際の
ゲートがレンズの端面に位置していることとなる。この
結果、上述の従来の樹脂製の素通しレンズにおいては、
ゲートとセンターマークとがレンズの端面とレンズの表
面上でかつ光軸上とにそれぞれ別個の位置に位置するこ
ととなるので、金型の構造上課題がある。また、樹脂成
形品において、ゲートから離れた箇所には、フローマー
クが発生し易いので、レンズの端面にゲートを位置させ
た従来の樹脂製の素通しレンズの品質上課題がある。な
お、上述のフローマークは、樹脂製の素通しレンズの材
質、例えば、ＰＣ（ポリカーボネイト）の場合、発生し
易い傾向にある。However, the resin-made transparent lens in the above-mentioned conventional vehicle lamp has a problem that the gate mark formed by the gate is located at a position where the gate mark is inconspicuous, for example, at the end face of the lens. That is, the gate at the time of molding is located at the end face of the lens. As a result, in the above-mentioned conventional transparent lens made of resin,
Since the gate and the center mark are located at different positions on the end surface of the lens, on the surface of the lens, and on the optical axis, there is a problem in the structure of the mold. Further, in a resin molded product, a flow mark is easily generated at a position away from the gate, and thus there is a problem in quality of a conventional resin-made transparent lens in which the gate is located on the end surface of the lens. The flow mark described above tends to be easily generated in the case of a material of a transparent lens made of resin, for example, PC (polycarbonate).
【０００６】本発明の目的は、樹脂製の素通しレンズを
成形する金型の構造が簡単であり、かつ、成形品である
樹脂製の素通しレンズの品質が向上された車両用灯具に
おける樹脂製の素通しレンズを提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicular lamp having a simple structure of a mold for molding a resin-made transparent lens and having an improved quality of the resin-made transparent lens. It is to provide a transparent lens.
【０００７】[0007]
【課題を解決するための手段】本発明は、上記の目的を
達成するために、成形する際のゲートの位置が素通しレ
ンズの表面上でかつ光軸上に位置されており、ゲートに
より形成されるゲートマークが車検テスターに必要なセ
ンターマークとして利用した、ことを特徴とする。According to the present invention, in order to attain the above object, the position of the gate at the time of molding is located on the surface of the transparent lens and on the optical axis. The gate mark is used as a center mark required for a vehicle inspection tester.
【０００８】この結果、本発明の車両用灯具における樹
脂製の素通しレンズは、ゲートとセンターマークとがレ
ンズの表面上でかつ光軸上に同一位置に位置することと
なるので、金型の構造が簡単となる。また、ゲートがレ
ンズの端面からレンズのほぼ中央に位置することとな
り、ゲートから離れた箇所において発生し易いフローマ
ークがレンズの中央部分において発生するようなことが
ないので、樹脂製の素通しレンズの品質が向上されるこ
ととなる。As a result, the transparent lens made of resin in the vehicular lamp of the present invention has the gate and the center mark located at the same position on the surface of the lens and on the optical axis. Becomes easier. In addition, since the gate is located substantially at the center of the lens from the end face of the lens, a flow mark that is likely to be generated at a position distant from the gate does not occur at the center of the lens. Quality will be improved.
【０００９】[0009]
【発明の実施の形態】以下、本発明の車両用灯具におけ
る樹脂製の素通しレンズの一実施形態を添付図面を参照
して説明する。この例は、リフレクタ可動タイプのヘッ
ドランプの例について説明する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vehicular lamp according to an embodiment of the present invention. In this example, an example of a reflector movable type headlamp will be described.
【００１０】図において、１は例えば樹脂製のランプハ
ウジングである。このランプハウジング１は、前面（正
面）から見ると、ほぼ円形をなす。このランプハウジン
グ１の前面及び後部中央部には、開口部１０及び１１が
それぞれ設けられている。このランプハウジング１の前
面開口部１０には、本発明の樹脂製の素通しレンズ２が
配設されている。In FIG. 1, reference numeral 1 denotes a resin lamp housing, for example. The lamp housing 1 has a substantially circular shape when viewed from the front (front). Openings 10 and 11 are provided in the front and rear central portions of the lamp housing 1, respectively. The transparent lens 2 made of resin of the present invention is disposed in the front opening 10 of the lamp housing 1.
【００１１】この樹脂製の素通しレンズ２は、この例で
は、ＰＣ（ポリカーボネイト）からなり、前面（正面）
から見ると、ほぼ円形をなす。この樹脂製の素通しレン
ズ２を成形する際のゲート２０（図２中、二点鎖線にて
示す）の位置は、素通しレンズ２の表面（後述する灯室
３と反対側の面）上でかつ光軸Ｚ−Ｚ（図２中、一点鎖
線にて示す）上に位置されている。このゲート２０によ
り形成されるゲートマークが車検テスターに必要なセン
ターマーク２１として利用する。このセンターマーク２
１は、小円形の凹部からなる。The transparent lens 2 made of resin is made of PC (polycarbonate) in this example, and has a front surface (front).
Seen from above, it is almost circular. The position of the gate 20 (indicated by a two-dot chain line in FIG. 2) at the time of molding the resin-made transparent lens 2 is on the surface of the transparent lens 2 (the surface opposite to the lamp room 3 described later) and It is located on the optical axis ZZ (indicated by a dashed line in FIG. 2). The gate mark formed by the gate 20 is used as a center mark 21 necessary for a vehicle inspection tester. This center mark 2
1 comprises a small circular concave portion.
【００１２】上述の本発明の樹脂製の素通しレンズ２と
ランプハウジング１により灯室３が画成形成されてい
る。この灯室３内にはランプハウジング１と別体のリフ
レクタ４が、ピボット機構（図示せず）及び上下方向用
光軸調整装置（図示せず）及び左右方向用光軸調整装置
（図示せず）等により上下方向及び左右方向に、回動可
能に配設されている。The lamp chamber 3 is defined by the resin transparent lens 2 and the lamp housing 1 of the present invention. In the lamp chamber 3, a reflector 4 separate from the lamp housing 1 is provided with a pivot mechanism (not shown), a vertical optical axis adjusting device (not shown), and a horizontal optical axis adjusting device (not shown). ) And the like so as to be rotatable vertically and horizontally.
【００１３】このリフレクタ４の前面（素通しレンズ２
と対向する側の面）には、配光機能を備えた反射面４０
が設けられている。すなわち、このリフレクタ４は、所
謂マルチリフレクタである。また、このリフレクタ４の
後部中央には、光源バルブ用の挿通孔４１が設けられて
いる。この挿通孔４１には、光源バルブ５が着脱可能に
取り付けられている。この結果、光源バルブ５は、灯室
３内の所定の位置に位置することとなる。この光源バル
ブ５と上述のランプハウジング１の後部開口部１１とに
は、ゴムキャップ５０が水密に着脱可能に取り付けられ
ている。The front surface of the reflector 4 (the transparent lens 2)
On the side opposite to the surface), a reflection surface 40 having a light distribution function is provided.
Is provided. That is, the reflector 4 is a so-called multi-reflector. In the center of the rear part of the reflector 4, an insertion hole 41 for a light source bulb is provided. The light source bulb 5 is detachably attached to the insertion hole 41. As a result, the light source bulb 5 is located at a predetermined position in the lamp room 3. A rubber cap 50 is detachably attached to the light source bulb 5 and the rear opening 11 of the lamp housing 1 in a watertight manner.
【００１４】この実施の形態における本発明の樹脂製の
素通しレンズ２は、以上の如き構成からなるものである
から、光源バルブ５を点灯すると、その光源バルブ５か
らの光が反射面４０で素通しレンズ２側に所定の配光パ
ターンで反射され、その所定の配光パターンの反射光が
素通しレンズ２を透過して外部に照射され、所定の配光
パターンが得られることとなる。Since the transparent lens 2 made of resin of the present invention in this embodiment has the above-described configuration, when the light source bulb 5 is turned on, light from the light source bulb 5 passes through the reflection surface 40. The light is reflected by the predetermined light distribution pattern on the lens 2 side, and the reflected light of the predetermined light distribution pattern passes through the lens 2 and is radiated to the outside, whereby a predetermined light distribution pattern is obtained.
【００１５】特に、本発明の樹脂製の素通しレンズ２
は、成形する際のゲート２０の位置が素通しレンズ２の
表面上でかつ光軸Ｚ−Ｚ上に位置されており、ゲートに
より形成されるゲートマークが車検テスターに必要なセ
ンターマーク２１として利用したものであるから、ゲー
ト２０とセンターマーク２１とがレンズ２の表面上でか
つ光軸Ｚ−Ｚ上に同一位置に位置することとなるので、
金型の構造が簡単となる。また、ゲート２０がレンズ２
の端面からレンズ２のほぼ中央に位置することとなり、
ゲート２０から離れた箇所において発生し易いフローマ
ークがレンズ２の中央部分において発生するようなこと
がないので、樹脂製の素通しレンズ２の品質が向上され
ることとなる。In particular, the transparent lens 2 of the present invention made of resin
Is that the position of the gate 20 at the time of molding is located on the surface of the transparent lens 2 and on the optical axis Z-Z, and the gate mark formed by the gate was used as the center mark 21 necessary for the vehicle inspection tester. Since the gate 20 and the center mark 21 are located at the same position on the surface of the lens 2 and on the optical axis Z-Z,
The structure of the mold is simplified. The gate 20 is connected to the lens 2
Will be located approximately at the center of the lens 2 from the end face of
Since a flow mark which is likely to be generated at a position distant from the gate 20 does not occur at the central portion of the lens 2, the quality of the transparent lens 2 made of resin is improved.
【００１６】なお、上述の実施の形態においては、ヘッ
ドランプに使用した例について説明したが、本発明はそ
の他の車両用灯具、例えばフォグランプ等の車両用灯具
にも適用できる。また、上述の実施の形態においては、
配光機能を所謂リフレクタ４の反射面４０に備えたもの
であるが、その配光機能をレンズ２と別個のインナーレ
ンズに備えたものであっても良い。さらに、上述の実施
形態においては、ランプハウジング１とリフレクタ４と
が別体のものであるが、一体のものであっても良い。In the above embodiment, an example in which the present invention is applied to a headlamp has been described. However, the present invention can be applied to other vehicular lamps, for example, vehicular lamps such as fog lamps. In the above-described embodiment,
Although the light distribution function is provided on the reflection surface 40 of the so-called reflector 4, the light distribution function may be provided on an inner lens separate from the lens 2. Furthermore, in the above-described embodiment, the lamp housing 1 and the reflector 4 are separate bodies, but may be integrated.
【００１７】なお、上述の実施の形態においては、円形
の素通しレンズ２を使用したが、円形以外の素通しレン
ズであっても良い。また、上述の実施の形態において
は、センターマーク２１が小円形の凹部からなるもので
あるが、その他の形状のものであっても良い。さらに、
上述の実施形態においては、素通しレンズ２の樹脂とし
てＰＣ（ポリカーボネイト）を使用したものであるが、
その他の樹脂を使用しても良い。In the above embodiment, a circular transparent lens 2 is used, but a transparent lens other than a circular lens may be used. Further, in the above-described embodiment, the center mark 21 is formed of a small circular concave portion, but may have another shape. further,
In the above-described embodiment, PC (polycarbonate) is used as the resin of the transparent lens 2.
Other resins may be used.
【００１８】[0018]
【発明の効果】以上から明らかなように、本発明の車両
用灯具における樹脂製の素通しレンズは、成形する際の
ゲートの位置が素通しレンズの表面上でかつ光軸上に位
置されており、ゲートにより形成されるゲートマークが
車検テスターに必要なセンターマークとして利用したも
のであるから、ゲートとセンターマークとがレンズの表
面上でかつ光軸上に同一位置に位置することとなるの
で、金型の構造が簡単となる。また、ゲートがレンズの
端面からレンズのほぼ中央に位置することとなり、ゲー
トから離れた箇所において発生し易いフローマークがレ
ンズの中央部分において発生するようなことがないの
で、樹脂製の素通しレンズの品質が向上されることとな
る。As is apparent from the above, in the transparent lens made of resin in the vehicular lamp of the present invention, the gate position at the time of molding is located on the surface of the transparent lens and on the optical axis. Since the gate mark formed by the gate is used as the center mark required for the vehicle inspection tester, the gate and the center mark are located at the same position on the surface of the lens and on the optical axis. The structure of the mold is simplified. In addition, since the gate is located substantially at the center of the lens from the end face of the lens, a flow mark that is likely to be generated at a position distant from the gate does not occur at the center of the lens. Quality will be improved.
【図１】本発明の車両用灯具の一実施形態を示した正面
図である。FIG. 1 is a front view showing an embodiment of a vehicular lamp of the present invention.
【図２】図１におけるＩＩ−ＩＩ線断面図である。FIG. 2 is a sectional view taken along line II-II in FIG.
１…ランプハウジング、１０…前面開口部、１１…後部
開口部、２…樹脂製の素通しレンズ、２０…ゲート、２
１…センターマーク、３…灯室、４…リフレクタ、４０
…反射面、４１…挿通孔、５…光源バルブ、５０…ゴム
キャップ、Ｚ−Ｚ…光軸。DESCRIPTION OF SYMBOLS 1 ... Lamp housing, 10 ... Front opening part, 11 ... Rear opening part, 2 ... Transparent lens made of resin, 20 ... Gate, 2
1 ... Center mark, 3 ... Light room, 4 ... Reflector, 40
... reflection surface, 41 ... insertion hole, 5 ... light source bulb, 50 ... rubber cap, ZZ ... optical axis.
Claims (1)
ンズにより灯室が画成されており、前記灯室内には、光
源バルブと、その光源バルブからの光を前記素通しレン
ズ側に反射させる反射面とがそれぞれ配置されてなる車
両用灯具において、 前記樹脂製の素通しレンズは、成形する際のゲートの位
置が前記素通しレンズの表面上でかつ光軸上に位置され
ており、前記ゲートにより形成されるゲートマークが車
検テスターに必要なセンターマークとして利用した、こ
とを特徴とする車両用灯具における樹脂製の素通しレン
ズ。1. A lamp chamber is defined by a lamp housing and a transparent lens made of resin, and a light source bulb and a reflection surface for reflecting light from the light source bulb toward the transparent lens in the lamp chamber. In the vehicular lamp, each of the transparent lenses made of resin is formed by the gate, wherein a gate position at the time of molding is located on the surface of the transparent lens and on the optical axis. A transparent lens made of resin for a vehicle lamp, wherein the gate mark is used as a center mark required for a vehicle inspection tester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27735698A JP4303336B2 (en) | 1998-09-30 | 1998-09-30 | Plastic through lens for automotive lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27735698A JP4303336B2 (en) | 1998-09-30 | 1998-09-30 | Plastic through lens for automotive lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000106008A true JP2000106008A (en) | 2000-04-11 |
| JP4303336B2 JP4303336B2 (en) | 2009-07-29 |
Family
ID=17582393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27735698A Expired - Lifetime JP4303336B2 (en) | 1998-09-30 | 1998-09-30 | Plastic through lens for automotive lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4303336B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008097912A (en) * | 2006-10-10 | 2008-04-24 | Stanley Electric Co Ltd | Projection lens for vehicle headlight which uses semiconductor light-emitting element as light source |
| JP2013022753A (en) * | 2011-07-15 | 2013-02-04 | Stanley Electric Co Ltd | Valve gate type mold apparatus |
-
1998
- 1998-09-30 JP JP27735698A patent/JP4303336B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008097912A (en) * | 2006-10-10 | 2008-04-24 | Stanley Electric Co Ltd | Projection lens for vehicle headlight which uses semiconductor light-emitting element as light source |
| JP2013022753A (en) * | 2011-07-15 | 2013-02-04 | Stanley Electric Co Ltd | Valve gate type mold apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4303336B2 (en) | 2009-07-29 |
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