JPH0374444B2 - - Google Patents
Info
- Publication number
- JPH0374444B2 JPH0374444B2 JP60019302A JP1930285A JPH0374444B2 JP H0374444 B2 JPH0374444 B2 JP H0374444B2 JP 60019302 A JP60019302 A JP 60019302A JP 1930285 A JP1930285 A JP 1930285A JP H0374444 B2 JPH0374444 B2 JP H0374444B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- light
- float
- lenses
- light emitting
- 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 - Lifetime
Links
- 239000000758 substrate Substances 0.000 claims description 8
- 238000005286 illumination Methods 0.000 claims description 6
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 239000004065 semiconductor Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 238000009792 diffusion process Methods 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/42—Wire connectors; Manufacturing methods related thereto
- H01L24/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
- H01L24/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/00014—Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は車輛用灯具に使用して好適な照明装置
に係り、特に多数の発光ダイオードを光源として
使用したものにおいて、表面板の前面を均一に照
明し照明効果を向上させるようにした照明装置に
関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a lighting device suitable for use in a vehicle lamp, and particularly in a lighting device using a large number of light emitting diodes as a light source, the front surface of the surface plate is uniformly distributed. This invention relates to a lighting device that illuminates the room and improves the lighting effect.
近年、半導体技術の発達により輝度の高い発光
ダイオードが開発され、しかも安価に入手できる
ようになつたことから車輛用灯具、特に制動灯、
尾灯などの光源として電球の代りに使用すること
が検討されるに至つており、その一例として第１
０図に示すものが知られている。すなわち、１は
内面に多数の小さな凸レンズからなる拡散レンズ
２が密集して形成された前面レンズ、３は前面レ
ンズ１の後方に配設され表面に多数の発光ダイオ
ード４を所定の間隔をおいてマトリツク状に実装
してなる基板、５は前面レンズ１と共に灯体を形
成するバツクカバーである。各発光ダイオード４
から出た光は、前面レンズ１を透過し、該レンズ
を照明する際、拡散レンズ２によつて拡散され
る。
In recent years, with the development of semiconductor technology, high-brightness light-emitting diodes have been developed, and they are now available at low prices, which has led to the use of vehicular lighting, especially brake lights,
Consideration is now being given to using it instead of light bulbs as a light source for taillights, etc., and one example is the first
The one shown in Figure 0 is known. Namely, numeral 1 is a front lens having a densely formed diffuser lens 2 made up of many small convex lenses on its inner surface, and numeral 3 is a front lens disposed behind the front lens 1, with a large number of light emitting diodes 4 arranged at predetermined intervals on the surface. The board 5 is mounted in a matrix, and is a back cover that forms a lamp body together with the front lens 1. Each light emitting diode 4
The light emitted from the front lens 1 passes through the front lens 1 and is diffused by the diffusing lens 2 when illuminating the lens.
ところで、発光ダイオード４、特に半導体チツ
プ４ａを外気から遮断保護するためエポキシ樹脂
等の透明度の高い樹脂４ｂでモールドしたものに
おいては、樹脂４ｂ自体の先端部をドーム状に形
成して光の指向性を高めているため、発光ダイオ
ード４の軸線方向が最も明るく照明され、従つて
拡散レンズ２で拡散しているとは云え前面レンズ
１に明暗差を生じ、均一照明という点で問題があ
つた。そこで、発光ダイオード４の数を増やすこ
とも考えられるが、その場合にはコストアツプの
一因となるほか近接させすぎるとダイオード相互
の発熱により発光量が低下し、かえつて期待する
明るさが得られないという別の問題が生じる。
By the way, in the case of a light emitting diode 4, especially one molded with a highly transparent resin 4b such as epoxy resin in order to shield and protect the semiconductor chip 4a from the outside air, the tip of the resin 4b itself is formed into a dome shape to improve the directionality of light. Since the axial direction of the light emitting diode 4 is increased, the illumination is brightest in the axial direction of the light emitting diode 4, and even though the light is diffused by the diffusing lens 2, a difference in brightness occurs in the front lens 1, which causes a problem in uniform illumination. Therefore, it may be possible to increase the number of light emitting diodes 4, but in that case, this will not only cause an increase in costs, but if they are placed too close together, the amount of light emitted will decrease due to heat generation between the diodes, and the expected brightness will not be obtained. Another problem arises:
本発明に係る照明装置は上述したような点に鑑
みてなされたもので、透光性を有する表面板と、
表面に多数の魚眼集光レンズが形成され前記表面
板の後方に配置されたインナーレンズと、このイ
ンナーレンズの後方に配置され表面に前記各魚眼
集光レンズに対応して多数の発光ダイオードが実
装された基板と、前記表面板と前記インナーレン
ズとの間に配設された中間レンズを備え、この中
間レンズを、断面形状がそれぞれ略半円形の突条
体もしくは長溝からなりその長手方向と平行に多
数並列配置された第１のフロート状レンズと、同
じく断面形状がそれぞれ略半円形の突条体もしく
は長溝からなりその長手方向と平行に多数並列配
置されかつ前記第１のフロート状レンズの後方に
互いに直交する如く位置する第２のフロート状レ
ンズとで構成したものである。
The lighting device according to the present invention has been made in view of the above-mentioned points, and includes a light-transmitting surface plate,
an inner lens having a large number of fisheye condensing lenses formed on its surface and disposed behind the surface plate; and a large number of light emitting diodes disposed behind the inner lens and corresponding to each of the fisheye condensing lenses on its surface. is mounted on the substrate, and an intermediate lens disposed between the surface plate and the inner lens, and the intermediate lens is formed of a protrusion or a long groove each having a substantially semicircular cross-sectional shape, and the intermediate lens is formed of a protrusion or a long groove having a substantially semicircular cross-sectional shape in the longitudinal direction thereof. A large number of first float-shaped lenses are arranged in parallel in parallel with each other, and the first float-shaped lenses are arranged in parallel in a large number in parallel with the longitudinal direction of the protrusions or long grooves, each of which has a substantially semicircular cross-sectional shape. and a second float-shaped lens positioned perpendicularly to each other behind the lens.
本発明において、魚眼集光レンズは発光ダイオ
ードか出た光を集光して光軸と略平行な光線と
し、点光源を面光源に変換する。中間レンズは、
魚眼集光レンズを透過した平行光線を拡散するこ
とで、光の強度を均一化させる。
In the present invention, the fisheye condensing lens condenses the light emitted from the light emitting diode into a light beam substantially parallel to the optical axis, thereby converting a point light source into a surface light source. The intermediate lens is
By diffusing the parallel light beams that pass through the fisheye condenser lens, the intensity of the light is made uniform.
以下、本発明を図面に示す実施例に基づいて詳
細に説明する。
Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
第１図は本発明を自動車の尾灯に適用した場合
の一実施例を示す要部断面図、第２図は発光ダイ
オードの拡大断面図、第３図はインナーレンズと
中間レンズの斜視図である。これらの図におい
て、尾灯１０は灯体１１を形成するバツクカバー
１２と、このバツクカバー１２の前面開口部を塞
ぐ表面板１３とを備え、その内部にはインナーレ
ンズ１４、多数の発光ダイオード１５をマトリツ
クス状に実装してなる基板１６、表面板１３とイ
ンナーレンズ１４の間に配設された中間レンズ１
７等が配設されている。 Fig. 1 is a sectional view of a main part showing an embodiment of the present invention applied to a taillight of a car, Fig. 2 is an enlarged sectional view of a light emitting diode, and Fig. 3 is a perspective view of an inner lens and an intermediate lens. . In these figures, the taillight 10 includes a back cover 12 that forms a lamp body 11, and a surface plate 13 that closes the front opening of the back cover 12. Inside the taillight 10, an inner lens 14 and a large number of light emitting diodes 15 are arranged in a matrix. A substrate 16 mounted on the substrate 16, an intermediate lens 1 disposed between the surface plate 13 and the inner lens 14.
7th grade is installed.
前記表面板１３は透明もしくは透光性を有する
樹脂板からなり、その表裏面が共に平滑面に形成
されている。この場合、表面板１３は赤色等の所
定色に着色されることによりフイルターを構成し
ている。 The surface plate 13 is made of a transparent or light-transmitting resin plate, and both the front and back surfaces thereof are formed into smooth surfaces. In this case, the surface plate 13 is colored in a predetermined color such as red to constitute a filter.
前記インナーレンズ１４は透明もしくは透光性
を有する樹脂によつて形成され、表面には多数の
魚眼集光レンズ１９が密集して一体に形成されて
いる。各魚眼集光レンズ１９は、底部の各辺がほ
ぼ等しい略方形の輪郭形状を半球状の球面レンズ
で構成されている。 The inner lens 14 is made of a transparent or light-transmitting resin, and a large number of fisheye condensing lenses 19 are integrally formed on the surface thereof. Each of the fisheye condensing lenses 19 is constituted by a hemispherical spherical lens having a substantially rectangular outline with substantially equal sides on the bottom.
前記各発光ダイオード１５は、第２図に示すよ
うに前記各魚眼集光レンズ１９に対応して前記基
板１６の表面にそれぞれ実装されるもので、半導
体チツプ２１、透明樹脂２２、一対のリード線２
３ａ，２３ｂ、金線２４等で構成されている。前
記透明樹脂２２はエポキシ樹脂等によつて円柱状
に形成されて前記半導体チツプ２１、一対のリー
ド線２３ａ，２３ｂの一部および金線２４をモー
ルドしており、前記インナーレンズ１４の背面と
対向する先端面は平坦面に形成されて、半導体チ
ツプ２１から出て前方に向う光Ａを拡散させる拡
散面２６を構成している。透明樹脂２２の先端面
がドーム状の場合はレンズ機能を有し光を集光す
るため、拡散角が小さくなるが、平坦な面２６と
した場合は第２図に示すように光Ａは外側に屈折
するため、拡散角が大きく、これによつて魚眼集
光レンズ１９の大きさＩを変化させることができ
る。前記半導体チツプ２１は一方のリード線２３
ａの内端に設けられた略皿状のチツプ取付部２７
上に載置固定され、前記金線２４によつて他方の
リード線２３ｂの内端に接続されている。そし
て、各リード線２３ａ，２３ｂの外端は前記基板
１６の電気回路に接続されている。 As shown in FIG. 2, each of the light emitting diodes 15 is mounted on the surface of the substrate 16 in correspondence with each of the fisheye condensing lenses 19, and includes a semiconductor chip 21, a transparent resin 22, and a pair of leads. line 2
3a, 23b, gold wire 24, etc. The transparent resin 22 is formed of epoxy resin or the like into a cylindrical shape, molds the semiconductor chip 21, part of the pair of lead wires 23a and 23b, and the gold wire 24, and faces the back surface of the inner lens 14. The tip end surface is formed into a flat surface and constitutes a diffusing surface 26 that diffuses the light A exiting from the semiconductor chip 21 and directed forward. If the end surface of the transparent resin 22 is dome-shaped, it has a lens function and condenses light, resulting in a small diffusion angle, but if it is a flat surface 26, the light A is directed outward as shown in FIG. Since the light is refracted, the angle of diffusion is large, and thereby the size I of the fisheye condensing lens 19 can be changed. The semiconductor chip 21 has one lead wire 23
A substantially dish-shaped chip mounting portion 27 provided at the inner end of a.
The lead wire 23b is placed and fixed thereon, and is connected to the inner end of the other lead wire 23b by the gold wire 24. The outer ends of each lead wire 23a, 23b are connected to the electric circuit of the board 16.
前記中間レンズ１７は透明な樹脂によつて一体
に形成され、その表面に第１のフロート状レンズ
２９が、裏面に第２のフロート状レンズ３０がそ
れぞれ形成されている。第１のフロート状レンズ
２９は、それぞれ中間レンズ１７の長手方向ほぼ
全長に延在し幅方向に密接して並列配置された多
数の小さな半円筒形突条体２９ａで構成されてい
る。同様に第２のフロート状レンズ２９も、それ
ぞれ中間レンズ１７の幅方向ほぼ全長に延在し長
手方向に密接して並列配置された多数の小さな半
円筒形突条体３０ａで構成されている。したがつ
て、第１のフロート状レンズ２９と第２のフロー
ト状レンズ３０とは、互いに直交関係にある。 The intermediate lens 17 is integrally formed of transparent resin, and has a first float lens 29 formed on its front surface and a second float lens 30 formed on its back surface. The first float-like lens 29 is composed of a large number of small semi-cylindrical protrusions 29a, each of which extends over almost the entire length of the intermediate lens 17 in the longitudinal direction and is closely arranged in parallel in the width direction. Similarly, the second float-like lens 29 is composed of a large number of small semi-cylindrical protrusions 30a, each of which extends over almost the entire length of the intermediate lens 17 in the width direction and is closely arranged in parallel in the longitudinal direction. Therefore, the first float lens 29 and the second float lens 30 are orthogonal to each other.
このような構成から成る尾灯１０において、半
導体チツプ２１から出た光のうち前方に向い透明
樹脂２２の拡散面２６から外部に出射する光Ａ
は、該拡散面２６にて屈折し拡散される。このた
めこの拡散光Ａは当該発光ダイオード１５に対応
する魚眼集光レンズ１９の全領域Ｉをカバーする
に足るインナーレンズ１４の背面をほぼ均一に照
射し、該インナーレンズ１４を透過する際前記魚
眼集光レンズ１９によつて集光され、ほぼ平行光
線A1となつて前方に向う。この平行光線A1は魚
眼集光レンズ１９の表面全体から出射するため、
点光源としての発光ダイオード１５を面光源とし
ての態様に変換する。そして、平行光線A1は中
間レンズ１７を透過する際、第２および第１のフ
ロート状レンズ３０，２９によつて直交する方向
に２度拡散され、しかる後表面板１３を透過し外
部に出射する。 In the taillight 10 having such a configuration, out of the light emitted from the semiconductor chip 21, light A is directed forward and emitted to the outside from the diffusion surface 26 of the transparent resin 22.
is refracted and diffused at the diffusion surface 26. Therefore, this diffused light A almost uniformly illuminates the back surface of the inner lens 14, which is sufficient to cover the entire area I of the fisheye condensing lens 19 corresponding to the light emitting diode 15, and when passing through the inner lens 14, the The light is condensed by the fisheye condensing lens 19 and becomes a substantially parallel light beam A 1 toward the front. Since this parallel ray A1 is emitted from the entire surface of the fisheye condensing lens 19,
The light emitting diode 15 as a point light source is converted into a surface light source. When the parallel light beam A 1 passes through the intermediate lens 17, it is diffused twice in orthogonal directions by the second and first float lenses 30 and 29, and then passes through the surface plate 13 and exits to the outside. do.
かくして、このような構成からなる尾灯によれ
ば、発光ダイオード１５からの光を、透明樹脂２
２の拡散面２６と、魚眼集光レンズ１９と、第１
および第２のフロート状レンズ２９，３０によつ
て拡散、集光させ点光源を面光源に変換している
ので、ダイオード１５自体が有している発光出力
の指向性を弱めることができる。したがつて、明
暗差の発生を防止し、表面板１３を全面に亘つて
ほぼ均一な明るさで照明することができる。ま
た、各発光ダイオード１５は魚眼集光レンズ１９
に対応して配設され、ダイオード同士十分な間隔
を維持しているため、ダイオード相互の発熱によ
り発光性能が低下することもない。 Thus, according to the taillight having such a configuration, the light from the light emitting diode 15 is transmitted through the transparent resin 2.
the second diffusion surface 26, the fisheye condensing lens 19, and the first
Since the second float lenses 29 and 30 diffuse and condense the light to convert the point light source into a surface light source, the directivity of the light emitting output of the diode 15 itself can be weakened. Therefore, the occurrence of differences in brightness and darkness can be prevented, and the entire surface of the surface plate 13 can be illuminated with substantially uniform brightness. Furthermore, each light emitting diode 15 has a fisheye condenser lens 19.
Since the diodes are arranged in correspondence with each other and a sufficient distance is maintained between the diodes, there is no reduction in light emitting performance due to heat generation between the diodes.
第４図は本発明の他の実施例を示す発光ダイオ
ードの正面図である。この実施例は透明樹脂２２
のインナーレンズと対向する先端面を半球状の拡
散面３５とし、その中心Ｏもしくはその近傍に半
導体チツプ２１を配置した点が上記実施例と異な
るだけで、他の構成は全て同一である。 FIG. 4 is a front view of a light emitting diode showing another embodiment of the present invention. In this example, transparent resin 22
The only difference from the above embodiment is that the distal end surface facing the inner lens is a hemispherical diffusing surface 35, and the semiconductor chip 21 is disposed at or near the center O, and all other configurations are the same.
このような構成からなる発光ダイオード１５に
おいては、半導体チツプ２１から出て球面状拡散
面３５に向う光A3は、該拡散面３５にて反射お
よび屈折することなく全てストレートに外部に出
射するため、光の損失が少なく、より一層明るい
照明を可能にする利点を有している。 In the light emitting diode 15 having such a configuration, the light A 3 that comes out from the semiconductor chip 21 and goes toward the spherical diffusing surface 35 is not reflected or refracted by the diffusing surface 35 and is all emitted straight to the outside. , it has the advantage of having less light loss and enabling even brighter illumination.
ここで、第５図に示すように半導体チツプ２１
を球面状拡散面３５の中心Ｏより下方に所定距離
はなして配置すると、該チツプ２１から出て拡散
面３５を透過する光A8をすべて対応する魚眼集
光レンズ１９に効率よく導くことができる。 Here, as shown in FIG.
By arranging the chip 21 at a predetermined distance below the center O of the spherical diffusing surface 35, all of the light A8 that comes out of the chip 21 and passes through the diffusing surface 35 can be efficiently guided to the corresponding fisheye condenser lens 19. can.
第６図は本発明の他の実施例を示す要部断面
図、第６図は主要構成部品の斜視図である。本実
施例はインナーレンズ１４と基板１６の間に遮光
部材４０を介在させた点が第１図に示した実施例
と異なつている。 FIG. 6 is a sectional view of main parts showing another embodiment of the present invention, and FIG. 6 is a perspective view of main components. This embodiment differs from the embodiment shown in FIG. 1 in that a light shielding member 40 is interposed between the inner lens 14 and the substrate 16.
前記遮光部材４０は不透明な合成樹脂によつて
一体に形成され、各発光ダイオード１５を個々独
立に画成収納する多数のダイオード収納部４１を
有している。各ダイオード収納部４１は遮光部材
４０の表裏面に開口する逆台形状の透光からな
り、表面側開口部が魚眼集光レンズ１９の輪郭形
状とほぼ同一の大きさを有している。そして、各
ダイオード収納部４１を仕切る壁面４２は、アル
ミ箔の貼着等により反射面を形成している。 The light shielding member 40 is integrally formed of opaque synthetic resin, and has a large number of diode storage portions 41 that individually and independently store each light emitting diode 15 in a defined manner. Each diode accommodating portion 41 is formed of an inverted trapezoidal transparent structure that opens on the front and back surfaces of the light shielding member 40, and the opening on the front side has approximately the same size as the outline shape of the fisheye condensing lens 19. The wall surface 42 that partitions each diode storage section 41 forms a reflective surface by pasting aluminum foil or the like.
半導体チツプ２１から出射したダイオード収納
部４１の壁面４２に向う斜め方向の光のうちその
一部A4は、該壁面４２によつてインナーレンズ
１４方向に反射し、該レンズ１４、中間レンズ１
７を順次透過し、表面板１３の照明に寄与する。
したがつて、光の損失が減少し、照明効果を一層
向上させる。 Of the light emitted from the semiconductor chip 21 and directed toward the wall surface 42 of the diode storage section 41 in an oblique direction, a portion A4 thereof is reflected by the wall surface 42 in the direction of the inner lens 14, and is reflected by the wall surface 42 toward the inner lens 14.
7 and contributes to the illumination of the surface plate 13.
Therefore, light loss is reduced and the lighting effect is further improved.
この場合、斜め前方に出射する光のうちある特
定の角度を以つて出射する光は、他の光線に比べ
て明るく、この明るい光がインナーレンズ１９、
中間レンズ１７および表面板１３を透過して斜め
前方に出射されると、キラキラと輝き眩惑する
が、本実施例のように遮光部材４０を配設して壁
面４２により反射させると、第１図実施例に比べ
て眩光を少なくすることができ、斜め前方からの
視認を容易にする。また、前記壁面４２を回転放
物面の一部とし、その焦点位置に発光ダイオード
１５を位置させておけば、該壁面４２によつて反
射した反射光は回転放物面の軸心とほぼ平行な平
行光線となつて前方に向うため、当該ダイオード
に対応する魚眼集光レンズ１９によつて確実に集
光され、隣接する他の魚眼集光レンズに入射する
ことはない。 In this case, among the light that is emitted diagonally forward, the light that is emitted at a certain angle is brighter than other light rays, and this bright light is the inner lens 19,
When the light passes through the intermediate lens 17 and the front plate 13 and is emitted diagonally forward, it shines brightly and dazzles, but if the light shielding member 40 is provided as in this embodiment and the light is reflected by the wall surface 42, as shown in FIG. The glare can be reduced compared to the embodiment, and visibility from diagonally ahead is facilitated. Furthermore, if the wall surface 42 is made a part of a paraboloid of revolution and the light emitting diode 15 is positioned at its focal point, the reflected light reflected by the wall surface 42 will be approximately parallel to the axis of the paraboloid of revolution. Since the light is directed forward as parallel rays, it is reliably focused by the fisheye condensing lens 19 corresponding to the diode, and does not enter into other adjacent fisheye condensing lenses.
第８図は遮光部材の他の実施例を示す要部断面
図である。この実施例は遮光部材４０をインナー
レンズ１４の背面に一体的に設け、各発光ダイオ
ード１５を画成したものである。遮光部材４０
は、直交する横壁板とで、格子状に形成されて後
方に開放する多様のダイオード収納部４１を有し
ている。各ダイオード収納部４１は各魚眼集光レ
ンズ１９に対応しており、その中央に発光ダイオ
ード１５がそれぞれ挿入位置されている。遮光部
材４０と基板１６との間には適宜な隙間が設定さ
れ、これにより通気を良くし、発光ダイオード１
５の放熱効果を向上させている。 FIG. 8 is a sectional view of a main part showing another embodiment of the light shielding member. In this embodiment, a light shielding member 40 is integrally provided on the back surface of the inner lens 14 to define each light emitting diode 15. Light shielding member 40
has various diode housing portions 41 formed in a lattice shape with orthogonal side wall plates and open to the rear. Each diode storage section 41 corresponds to each fisheye condenser lens 19, and a light emitting diode 15 is inserted into the center thereof. An appropriate gap is set between the light shielding member 40 and the substrate 16, which improves ventilation and allows the light emitting diode 1 to
The heat dissipation effect of 5 is improved.
第９図は本発明の更に他の実施例を示す表面板
と中間レンズの要部斜視図である。本実施例は中
間レンズ１７の第１および第２のフロート状レン
ズ２９，３０を、表面板１３と該中間レンズ１７
に分けて形成し、表面板１３に中間レンズとして
の機能を半分受けた持たせものである。第１のフ
ロート状レンズ２９は表面板１３の裏面に形成さ
れ、第２のフロート状レンズ３０は中間レンズ１
７の表面に前記第１のフロート状レンズ２９と直
交する如く形成されている。なお、他の構造は第
１図実施例もしくは第６図実施例と同様に構成さ
れているものとする。 FIG. 9 is a perspective view of main parts of a surface plate and an intermediate lens showing still another embodiment of the present invention. In this embodiment, the first and second float lenses 29 and 30 of the intermediate lens 17 are connected to the surface plate 13 and the intermediate lens 17.
The front plate 13 has half the function of an intermediate lens. The first float lens 29 is formed on the back surface of the front plate 13, and the second float lens 30 is formed on the intermediate lens 1.
7 is formed so as to be perpendicular to the first float lens 29 . It is assumed that the other structures are the same as those of the embodiment shown in FIG. 1 or the embodiment shown in FIG.
このような構成においても、上記実施例と同様
の効果が得られることは明らかであろう。 It is clear that the same effects as in the above embodiment can be obtained also in such a configuration.
なお、本発明はいずれの実施例も第１および第
２のフロート状レンズ２９，３０を、略半円筒形
の突条体からなる凸レンズで構成した場合につい
て説明したが、略半円形の長溝からなる凹レンズ
であつても同一の効果が得られるものである。 Incidentally, in each of the embodiments of the present invention, the first and second float-like lenses 29 and 30 have been described as convex lenses consisting of approximately semi-cylindrical long grooves. The same effect can be obtained even with a concave lens.
以上説明したように本発明に係る照明装置によ
れば、インナーレンズの魚眼集光レンズにより発
光ダイオードから出た光を光軸と略平行な平行光
線とすることで、点光源を面光源としての態様に
変換し、しかも中間レンズの第１および第２のフ
ロート状レンズで直交する方向に２度拡散してい
るので、発光出力の指向性を弱めることができ
る。したがつて、表面板の表面全体をほぼ均一な
明るさで照明でき、照明効果を向上させる。ま
た、発光ダイオードの数を増加させる必要がな
く、そのためダイオード相互の発熱による発光量
への悪影響を防止できるなど、その効果は非常に
大である。
As explained above, according to the lighting device according to the present invention, the fisheye condensing lens of the inner lens converts the light emitted from the light emitting diode into parallel rays substantially parallel to the optical axis, thereby converting a point light source into a surface light source. Moreover, since the light is diffused twice in orthogonal directions by the first and second float lenses of the intermediate lens, the directivity of the light emission output can be weakened. Therefore, the entire surface of the top plate can be illuminated with substantially uniform brightness, improving the illumination effect. In addition, there is no need to increase the number of light emitting diodes, and therefore the effect of preventing the heat generation of the diodes from adversely affecting the amount of light emitted is very large.
第１図は本発明を自動車の尾灯に適用した場合
の一実施例を示す要部断面図、第２図は発光ダイ
オードの拡大断面図、第３図はインナーレンズと
中間レンズの斜視図、第４図および第５図はそれ
ぞれ発光ダイオードの他の実施例を示す正面図、
第６図は本発明の他の実施例を示す要部断面図、
第７図は主要構成部品の斜視図、第８図は遮光部
材の他の実施例を示す要部断面図、第９図は本発
明の他の実施例を示す表面板と中間レンズの要部
斜視図、第１０図は従来装置の一例を示す断面図
である。
１０……尾灯、１２……バツクカバー、１３…
…表面板、１４……インナーレンズ、１５……発
光ダイオード、１６……基板、１７……中間レン
ズ、１９……魚眼集光レンズ、２１……半導体チ
ツプ、２２……透明樹脂、２９……第１のフロー
ト状レンズ、３０……第２のフロート状レンズ、
４０……遮光部材。
Fig. 1 is a sectional view of essential parts showing an embodiment of the present invention applied to an automobile taillight, Fig. 2 is an enlarged sectional view of a light emitting diode, Fig. 3 is a perspective view of an inner lens and an intermediate lens, and Fig. 3 is a perspective view of an inner lens and an intermediate lens. 4 and 5 are front views showing other embodiments of the light emitting diode, respectively;
FIG. 6 is a sectional view of main parts showing another embodiment of the present invention;
FIG. 7 is a perspective view of the main components, FIG. 8 is a sectional view of main parts showing another embodiment of the light shielding member, and FIG. 9 is a main part of a surface plate and intermediate lens showing another embodiment of the present invention. The perspective view and FIG. 10 are sectional views showing an example of a conventional device. 10...tail light, 12...back cover, 13...
... Surface plate, 14 ... Inner lens, 15 ... Light emitting diode, 16 ... Substrate, 17 ... Intermediate lens, 19 ... Fisheye condensing lens, 21 ... Semiconductor chip, 22 ... Transparent resin, 29 ... ...first float lens, 30...second float lens,
40... Light shielding member.
Claims (1)
塞ぐ表面板と、表面に多数の魚眼集光レンズが形
成され前記表面板の後方に配置されたインナーレ
ンズと、このインナーレンズの後方に配設された
基板と、この基板の表面に配設されそれぞれ前記
各魚眼集光レンズに対応する多数の発光ダイオー
ドと、前記表面板と前記インナーレンズとの間に
配設された中間レンズを備え、この中間レンズ
は、断面形状がそれぞれ略半円形の突条体もしく
は長溝からなりその長手方向と平行に多数並列配
置された第１のフロート状レンズと、同じく断面
形状がそれぞれ略半円形の突条体もしくは長溝か
らなりその長手方向と平行に多数並列配置されか
つ前記第１のフロート状レンズの後方に互いに直
交する如く位置する第２のフロート状レンズを備
えていることを特徴とする照明装置。1. A surface plate that is translucent and closes the front opening of the back cover, an inner lens having a large number of fisheye condensing lenses formed on its surface and placed behind the surface plate, and a lens located behind the inner lens. a plurality of light emitting diodes disposed on the surface of the substrate and corresponding to each of the fisheye condensing lenses, and an intermediate lens disposed between the surface plate and the inner lens. The intermediate lens includes a plurality of first float-shaped lenses each having a substantially semicircular cross-sectional shape and a plurality of first float-like lenses arranged in parallel in parallel with the longitudinal direction, each of which is a protrusion or a long groove having a substantially semicircular cross-sectional shape. An illumination device comprising a plurality of second float-like lenses made of protrusions or long grooves arranged parallel to each other in parallel with the longitudinal direction thereof, and located behind the first float-like lenses so as to be orthogonal to each other. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60019302A JPS61181003A (en) | 1985-02-05 | 1985-02-05 | Lighting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60019302A JPS61181003A (en) | 1985-02-05 | 1985-02-05 | Lighting apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61181003A JPS61181003A (en) | 1986-08-13 |
| JPH0374444B2 true JPH0374444B2 (en) | 1991-11-27 |
Family
ID=11995622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60019302A Granted JPS61181003A (en) | 1985-02-05 | 1985-02-05 | Lighting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61181003A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2518236B2 (en) * | 1986-12-19 | 1996-07-24 | オムロン株式会社 | Light source |
| JP3825295B2 (en) * | 2001-10-01 | 2006-09-27 | 松下電器産業株式会社 | LIGHTING DEVICE AND MANUFACTURING METHOD THEREOF |
| JP4498160B2 (en) * | 2005-02-03 | 2010-07-07 | シーシーエス株式会社 | Light irradiation device |
| DE102005054955A1 (en) * | 2005-08-31 | 2007-04-26 | Osram Opto Semiconductors Gmbh | Light-emitting module, in particular for use in a projection optical device and optical projection device |
| JP5317132B2 (en) * | 2010-12-03 | 2013-10-16 | ニチユ三菱フォークリフト株式会社 | Automatic warehouse |
-
1985
- 1985-02-05 JP JP60019302A patent/JPS61181003A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61181003A (en) | 1986-08-13 |
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