JPH0248869Y2

JPH0248869Y2 -

Info

Publication number: JPH0248869Y2
Application number: JP1983086116U
Authority: JP
Priority date: 1983-06-06
Filing date: 1983-06-06
Publication date: 1990-12-21
Also published as: JPS59192191U

Description

【考案の詳細な説明】本考案は、道路交通信号灯、鉄道信号灯などと
して使用する発光ダイオードを用いた信号灯に関
するものである。[Detailed Description of the Invention] The present invention relates to a signal light using a light emitting diode, which is used as a road traffic signal light, a railway signal light, etc.

第１図に従来の発光ダイオード（LED）を光
源とする信号灯の構成を示す。第１図において、
１はボデイ、２はこのボデイ１の前面部に取付け
たLED取付基板であり、この基板２に多数の一
般的なシングルLED３と調整抵抗４を取付けて
いる。また、基板２の前方にレンズ５を配設し、
前記ボデイ１の後面に放熱器６を一体的に設けて
いる。前記レンズ５の中心とLED取付軸は同一
軸上にあり、またレンズ５にはレンズカツトを設
け、これによりLED３の発光を屈折させて所要
の配光としている。 Figure 1 shows the configuration of a conventional signal light using a light emitting diode (LED) as a light source. In Figure 1,
1 is a body, 2 is an LED mounting board attached to the front part of this body 1, and a large number of general single LEDs 3 and adjustment resistors 4 are attached to this board 2. Further, a lens 5 is arranged in front of the substrate 2,
A heat radiator 6 is integrally provided on the rear surface of the body 1. The center of the lens 5 and the LED mounting axis are on the same axis, and the lens 5 is provided with a lens cut, which refracts the light emitted from the LED 3 to achieve a desired light distribution.

このように信号灯は多数のLED３を光源とし
て点灯し、レンズ５により所要の配光となるが、
LED３の取付けにそのリードを利用しているた
め、リードの取付部に腐食が生じるばかりでな
く、LED３の発熱を効率を放出することが難し
く、周囲温度の上昇に伴つて光度が低減する。ま
た、シングルLEDを用いたり、調整抵抗４とし
て個別素子を用いているため、取付けに多くの労
力と時間を必要とし量産性に欠けるといつた欠点
がある。 In this way, the signal light is lit using a large number of LEDs 3 as a light source, and the required light distribution is achieved using the lens 5.
Since the lead is used to attach the LED 3, not only does corrosion occur at the attachment part of the lead, but also it is difficult to efficiently release the heat generated by the LED 3, and the luminous intensity decreases as the ambient temperature rises. In addition, since a single LED is used and an individual element is used as the adjustment resistor 4, it requires a lot of labor and time for installation and has the drawback of lacking mass productivity.

本考案は上記のような欠点を除去するためにな
されたもので、光源としてLEDチツプを用いて
直接ボンデイングによつて基板に取付けるととも
に、レンズとして魚眼レンズを用いることによ
り、耐久性や量産性の向上が図れるとともに、放
熱効果を高めることができる発光ダイオードを用
いた信号を提供することを目的とする。 This invention was developed to eliminate the above-mentioned drawbacks, and by using an LED chip as a light source and attaching it to the board by direct bonding, and using a fisheye lens as a lens, it improves durability and mass productivity. The object of the present invention is to provide a signal using a light emitting diode that can improve the heat dissipation effect.

以下、本考案を図示の実施例に基づいて詳細に
説明する。 Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

第２図は本考案の一実施例を示すもので、後面
に放熱器６を一体的に設けたボデイ１の前面部に
プリント基板１１を取付け、この基板１１に多数
のLEDチツプ１２を直接ボンデイングするとと
もに、調整抵抗１３をチツプ抵抗、又は印刷によ
り形成している。また、基板１１の前面には魚眼
レンズ１４を配置し、基板１１、LEDチツプ１
２、調整抵抗１３との間の空間を透明な充填材１
５により充している。前記魚眼レンズ１４は各魚
眼レンズカツトの曲率を変化させ、LEDチツプ
１２の光を所要の配光となるように屈折させてい
る。 FIG. 2 shows an embodiment of the present invention, in which a printed circuit board 11 is attached to the front part of a body 1 with a heat sink 6 integrally provided on the rear surface, and a large number of LED chips 12 are directly bonded to this board 11. At the same time, the adjustment resistor 13 is formed by chip resistor or printing. In addition, a fisheye lens 14 is arranged on the front surface of the board 11, and the board 11 and the LED chip 1
2. Fill the space between the adjustment resistor 13 with a transparent filler 1
5. The fisheye lens 14 changes the curvature of each fisheye lens cut to refract the light from the LED chip 12 so as to obtain a desired light distribution.

上記構造の本考案に係る信号灯は、多数の
LEDチツプ１２を基板１１に直接ボンデイング
したので、腐食個所となるリード取付部が略皆無
となり、耐久性が著しく向上する。しかも、
LEDチツプ１２自体の放熱も良好となり、光度
が安定する。また、チツプ１２を直接ボンデイン
グするとともに、調整抵抗１３をチツプ抵抗、又
は印刷によつて形成するので、量産性も大幅に改
善される。 The signal light according to the present invention having the above structure has a large number of
Since the LED chip 12 is directly bonded to the substrate 11, there are almost no lead attachment parts that can be corroded, and durability is significantly improved. Moreover,
The heat dissipation of the LED chip 12 itself is also improved, and the luminous intensity is stabilized. Furthermore, since the chip 12 is directly bonded and the adjustment resistor 13 is formed by chip resistor or printing, mass productivity is also greatly improved.

更に、魚眼レンズ１４の使用によりレンズが一
重構造となるため、LEDチツプの発光の透過率
が高まり、高い放熱効果による光度の安定化と相
俟つて視認性の向上が図れるといつた利点があ
る。 Furthermore, the use of the fisheye lens 14 results in a single lens structure, which has the advantage of increasing the transmittance of the light emitted by the LED chip, stabilizing the luminous intensity due to its high heat dissipation effect, and improving visibility.

[Brief explanation of the drawing]

第１図は従来の発光ダイオードを用いた信号灯
の構造を示す断面図、第２図は本考案の一実施例
を示す断面図である。１……ボデイ、６……放熱器、１１……プリン
ト基板、１２……LEDチツプ、１３……印刷に
より形成した調整抵抗、１４……魚眼レンズ、１
５……充填材。 FIG. 1 is a sectional view showing the structure of a conventional signal light using light emitting diodes, and FIG. 2 is a sectional view showing an embodiment of the present invention. 1...Body, 6...Radiator, 11...Printed circuit board, 12...LED chip, 13...Adjustment resistor formed by printing, 14...Fisheye lens, 1
5...Filling material.

Claims

[Scope of utility model registration request]

A printed circuit board is attached to the front part of the body, which has a heat sink integrated on the rear surface, and a large number of light emitting diode chips are directly bonded to this board. Adjustment resistors are formed by chip resistance or printing, and a fisheye lens is attached to the front of the board. A signal light using light emitting diodes characterized by the arrangement of.