JP2005217354A - Light emitting device unit - Google Patents

Light emitting device unit Download PDF

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Publication number
JP2005217354A
JP2005217354A JP2004025371A JP2004025371A JP2005217354A JP 2005217354 A JP2005217354 A JP 2005217354A JP 2004025371 A JP2004025371 A JP 2004025371A JP 2004025371 A JP2004025371 A JP 2004025371A JP 2005217354 A JP2005217354 A JP 2005217354A
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Japan
Prior art keywords
led
connection terminal
light emitting
socket
connection
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JP2004025371A
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Japanese (ja)
Inventor
Takashi Niwa
孝 丹羽
Takashi Kitade
貴士 北出
Masaki Okamoto
昌樹 岡本
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Sumitomo Wiring Systems Ltd
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Sumitomo Wiring Systems Ltd
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Priority to JP2004025371A priority Critical patent/JP2005217354A/en
Publication of JP2005217354A publication Critical patent/JP2005217354A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • F21S43/195—Details of lamp holders, terminals or connectors

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (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)

Abstract

<P>PROBLEM TO BE SOLVED: To connect a light emitting device to a conductive path easily. <P>SOLUTION: An LED 10 is laid into a socket 21 and attached thereto in a connection state in which a pair of connection terminals 30 holds lead terminals 13A and 13B. An insulation displacement blade 36 is formed in each connection terminal 30. A heatsink 40 formed and attached as an another object is connected to the connection terminal 30 connected to the lead terminal 13B at the negative side. This constitutes an LED unit U. The insulation displacement blade 36 of the LED unit U is connected to a covered electric wire 50 used as a conductive path in an insulation-displaced state. A state is made where the lead terminals 13A and 13B of the LED 10 are electrically connected to the corresponding covered conductor 50. The LED 10 tends to generate heat especially at the negative side when it is energized. However, heat is effectively radiated by use of the heatsink 40. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、発光ダイオード等の発光素子ユニットに関する。   The present invention relates to a light emitting element unit such as a light emitting diode.

近年、車両用灯具の一部には、光源として口金付きバルブやウェッジベースバルブ等の電球に代わり、発光ダイオード（ＬＥＤ）を使用したものが提案されている（例えば、特許文献１参照）。ＬＥＤの配設構造はより具体的には、灯具本体内に導電路を構成するバスバーが収容され、複数のＬＥＤが所定位置に配されて、それぞれのリード端子がバスバー上にレーザ溶接により接続された構造となっている。
特開２０００−２２２９１５公報 In recent years, some vehicle lamps have been proposed that use light emitting diodes (LEDs) instead of light bulbs such as bulbs with caps and wedge base bulbs as light sources (see, for example, Patent Document 1). More specifically, the LED arrangement structure is such that a bus bar constituting a conductive path is accommodated in the lamp body, a plurality of LEDs are arranged at predetermined positions, and each lead terminal is connected to the bus bar by laser welding. It has a structure.
JP 2000-222915 A

すなわち従来では、導電路にバスバーが用いられていたため、ＬＥＤを接続するのに、レーザ溶接といった大掛かりで面倒な作業を伴っていた。またレーザ溶接の場合はＬＥＤに熱が加わり、その輝度低下を招くおそれがあった。さらに車種によっては、ＬＥＤの配置が異なる場合もあるが、配置が変わるごとに適合したバスバーを準備する必要がある等、配置換えに関して簡単に対応できないという問題もあった。
本発明は上記のような事情に基づいて完成されたものである。 That is, conventionally, since a bus bar is used for the conductive path, connecting the LEDs involves a large and troublesome work such as laser welding. In the case of laser welding, heat is applied to the LED, which may cause a decrease in luminance. Furthermore, although the arrangement of the LEDs may differ depending on the vehicle type, there is a problem that it is not possible to easily deal with the rearrangement, for example, it is necessary to prepare a suitable bus bar each time the arrangement changes.
The present invention has been completed based on the above circumstances.

請求項１の発明は、発光素子が装着されるソケットには、前記発光素子の各リード端子と個々に弾力的に接続される接続端子が設けられ、各接続端子には、電線に圧接可能な圧接部が設けられているところに特徴を有する。   According to the first aspect of the present invention, the socket to which the light emitting element is mounted is provided with a connection terminal that is elastically connected to each lead terminal of the light emitting element, and each connection terminal can be press-contacted to the electric wire. It is characterized in that the pressure contact portion is provided.

請求項２の発明は、請求項１に記載のものにおいて、少なくとも負側のリード端子と接続される接続端子には、放熱板が設けられているところに特徴を有する。
請求項３の発明は、請求項２に記載のものにおいて、前記放熱板が前記接続端子とは別体に形成されているところに特徴を有する。 The invention of claim 2 is characterized in that, in the device of claim 1, at least a connection terminal connected to the negative lead terminal is provided with a heat radiating plate.
A third aspect of the invention is characterized in that, in the second aspect of the invention, the heat radiating plate is formed separately from the connection terminal.

＜請求項１の発明＞
ソケットに装着された発光素子は、各リード端子が同ソケットに設けられた接続端子と弾性的に接続された状態でユニット化される。導電路は電線によって形成され、ユニットにおける接続端子の圧接部が電線に圧接されることにより、発光素子が導電路と接続される。
発光素子を導電路に電気的に接続する作業としては、その発光素子が装着されたユニットの接続端子の圧接部を、電線に圧接するだけで良いから、簡単に行うことができる。発光素子に熱的負荷が掛からないから、輝度低下を招くことも防止される。導電路が電線であると、それを適宜に湾曲して配線する等により、ユニットすなわち発光素子の配置の自由度を広げることができる。 <Invention of Claim 1>
The light emitting element mounted in the socket is unitized in a state where each lead terminal is elastically connected to a connection terminal provided in the socket. The conductive path is formed by an electric wire, and the light-emitting element is connected to the conductive path by pressing the press-contact portion of the connection terminal in the unit against the electric wire.
The operation of electrically connecting the light emitting element to the conductive path can be easily performed because it is only necessary to press the contact portion of the connection terminal of the unit on which the light emitting element is mounted to the electric wire. Since no thermal load is applied to the light emitting element, it is also possible to prevent a decrease in luminance. When the conductive path is an electric wire, the degree of freedom of arrangement of the units, that is, the light emitting elements can be expanded by appropriately bending and wiring the conductive path.

＜請求項２の発明＞
発光素子は通電されると、特に負側で発熱する傾向にあるが、負側のリード端子と接続された接続端子には放熱板が設けられているから、熱が有効に放散される。そのため、発光素子の故障が少なくでき、また耐用寿命も延ばすことができる。
＜請求項３の発明＞
接続端子の素材には例えばばね鋼板等が必要であるが、別体としたことで放熱板には安価な鉄板等が使用できる。もって、製造コストの低減を図ることができる。 <Invention of Claim 2>
When the light emitting element is energized, it tends to generate heat particularly on the negative side. However, since the heat sink is provided on the connection terminal connected to the negative lead terminal, heat is effectively dissipated. Therefore, the failure of the light emitting element can be reduced and the useful life can be extended.
<Invention of Claim 3>
For example, a spring steel plate or the like is required as the material of the connection terminal, but an inexpensive iron plate or the like can be used as the heat sink by being separated. Thus, the manufacturing cost can be reduced.

＜実施形態＞
以下、本発明の一実施形態を添付図面に基づいて説明する。この実施形態では、車両用灯具の光源、例えばリヤコンビネーションランプのうちの、車幅灯を兼ねてブレーキ操作に連動して点灯するテール・ストップランプに発光ダイオード１０（以下、ＬＥＤ１０という）を使用する場合を例示している。
図７に示すように、図示９個のＬＥＤ１０が、灯具本体内に収容されるベース２０に対して３次元的に配設されている。 <Embodiment>
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In this embodiment, a light-emitting diode 10 (hereinafter referred to as an LED 10) is used as a tail / stop lamp that also functions as a vehicle width lamp and is lit in conjunction with a brake operation, among light sources of vehicle lamps, for example, rear combination lamps. The case is illustrated.
As shown in FIG. 7, nine LEDs 10 shown in the figure are three-dimensionally arranged with respect to a base 20 accommodated in the lamp body.

より具体的には、ソケット２１にＬＥＤ１０を装着してなるユニットＵが３個ずつ階段状に配され、さらにこの３個一組の列が横方向に３列階段状に配されることで、９個のＬＥＤ１０が３次元的に配設されている。
なお実際には、各ユニットＵのソケット２１は、縦横の階段状をなすように一体的に形成されて上記したベース２０を構成しているが、以下では、９個の独立したユニットＵが一体化されたものとして説明する。 More specifically, three units U each having the LED 10 mounted on the socket 21 are arranged stepwise, and further, this set of three rows is arranged stepwise in three rows in the horizontal direction. Nine LEDs 10 are arranged three-dimensionally.
Actually, the socket 21 of each unit U is integrally formed so as to form a vertical and horizontal staircase to constitute the base 20 described above, but in the following, nine independent units U are integrated. It will be described as being realized.

ユニットＵは、図１ないし図３に示すように、ＬＥＤ１０と、ソケット２１と、一対の接続端子３０と、１枚の放熱板４０とから構成されている。
ＬＥＤ１０は、ブロック状の本体部１１の上面に発光部１２を突出して設けた形状であって、本体部１１の下面からは、左右一対の板状のリード端子１３Ａ，１３Ｂが突出され、それぞれの突出端は外側に向けて直角曲げされている。正面（図１の左手前）から見た左側が正側のリード端子１３Ａ、右側が負側のリード端子１３Ｂとされ、負側については、本体部１１における対応する角部が切除されて目印１４が形成されている。 As shown in FIGS. 1 to 3, the unit U includes an LED 10, a socket 21, a pair of connection terminals 30, and a single heat radiating plate 40.
The LED 10 has a shape in which the light emitting unit 12 is provided so as to protrude from the upper surface of the block-shaped main body 11, and a pair of left and right plate-like lead terminals 13 </ b> A and 13 </ b> B protrude from the lower surface of the main body 11. The protruding end is bent at a right angle toward the outside. The left side when viewed from the front (the front left side in FIG. 1) is a positive lead terminal 13A, and the right side is a negative lead terminal 13B. Is formed.

ソケット２１は合成樹脂材により厚肉の板状に形成され、上記したように、９枚が縦横の階段状をなすように一体的に形成されることにより、ベース２０が構成されている。
接続端子３０は、導電性並びに弾力性に優れた金属板、例えばばね鋼板をプレス成形して形成されており、両接続端子３０は同一形状である。接続端子３０は略門形に曲げ形成され、上辺部分が下側に凹み形成されて弾性接触部３１となっている。
弾性接触部３１の手前側の端縁からは、短寸の取付脚３２が垂下して設けられ、その垂下端が外方の斜め上向きに曲げられて取付片３３が形成されている。一方、奥側の端縁からは長寸の接続脚３５が垂下して設けられ、その垂下端には圧接刃３６が形成されている。圧接刃３６には、下方に開口した圧接溝３７が切られている。また、接続脚３５における圧接刃３６の上方位置には、外方の斜め上方を向いた係止片３８が、切り起こしにより形成されている。 The socket 21 is formed in a thick plate shape from a synthetic resin material, and the base 20 is configured by integrally forming nine sockets so as to form vertical and horizontal steps as described above.
The connection terminal 30 is formed by press-molding a metal plate excellent in conductivity and elasticity, for example, a spring steel plate, and both the connection terminals 30 have the same shape. The connection terminal 30 is bent and formed in a substantially gate shape, and the upper side portion is formed to be recessed downward to form an elastic contact portion 31.
A short mounting leg 32 is provided to hang down from the front edge of the elastic contact portion 31, and the hanging end is bent outwardly and obliquely upward to form a mounting piece 33. On the other hand, a long connecting leg 35 is provided so as to hang from the edge on the back side, and a press-contact blade 36 is formed on the lower end thereof. The press contact blade 36 has a press contact groove 37 opened downward. In addition, a locking piece 38 facing outward and obliquely upward is formed by cutting and raising at a position above the pressure contact blade 36 in the connection leg 35.

これに対して、ソケット２１の上面における左右の領域には、上記した接続端子３０の取付脚３２と接続脚３５とを上方から挿入可能な前後の挿入溝２２Ａ，２２Ｂが、上下両面を貫通してそれぞれ形成されている。前側の挿入溝２２Ａの前面と、後側の挿入溝２２Ｂの後面とには、図３に示すように、接続端子３０における取付片３３と係止片３８とがそれぞれ係止可能な係止溝２３Ａ，２３Ｂが形成されている。詳しくは後記するように、接続端子３０の弾性接触部３１が、ＬＥＤ１０のリード端子１３Ａ，１３Ｂをソケット２１の上面に弾性的に押さえつつ両脚３２，３５が対応する挿入溝２２Ａ，２２Ｂに正規に挿入された場合に、取付片３３並びに係止片３８が対応する係止溝２３Ａ，２３Ｂに係止可能となっている（図６参照）。   On the other hand, in the left and right regions on the upper surface of the socket 21, the front and rear insertion grooves 22A and 22B through which the mounting legs 32 and the connection legs 35 of the connection terminal 30 can be inserted from above penetrate both the upper and lower sides. Each is formed. As shown in FIG. 3, a locking groove in which the attachment piece 33 and the locking piece 38 of the connection terminal 30 can be respectively locked on the front surface of the front insertion groove 22 </ b> A and the rear surface of the rear insertion groove 22 </ b> B. 23A and 23B are formed. As will be described in detail later, the elastic contact portion 31 of the connection terminal 30 elastically holds the lead terminals 13A, 13B of the LED 10 against the upper surface of the socket 21, and the legs 32, 35 are properly inserted into the corresponding insertion grooves 22A, 22B. When inserted, the mounting piece 33 and the locking piece 38 can be locked in the corresponding locking grooves 23A and 23B (see FIG. 6).

また、ソケット２１における正面から見た右側の領域（負側のリード端子１３Ｂが位置する領域）には、放熱板４０が装着されている。この放熱板４０は、熱伝導性に優れた金属板、例えば鉄板をプレス成形して形成されており、全体としては、ソケット２１の上面における右側の領域よりも一回り小さい上面板４１の左右両側縁から、ソケット２１の厚さの３倍近くの高さを持った側板４２が垂下状に形成された、門形断面に形成されている。
放熱板４０の上面板４１には、接続端子３０の取付脚３２と接続脚３５とを上方から挿入可能な前後の窓孔４３が開口されている。また、両側板４２には、外方の斜め上方を向いた掛止片４４が、前後一対ずつ切り起こしにより形成されている。 In addition, a heat radiating plate 40 is attached to the right region of the socket 21 as viewed from the front (the region where the negative lead terminal 13B is located). The heat radiating plate 40 is formed by press-molding a metal plate having excellent thermal conductivity, for example, an iron plate. As a whole, the left and right sides of the upper surface plate 41 are slightly smaller than the right region on the upper surface of the socket 21. From the edge, a side plate 42 having a height nearly three times the thickness of the socket 21 is formed in a gate-like cross section formed in a hanging shape.
The upper surface plate 41 of the heat radiating plate 40 is provided with front and rear window holes 43 into which the mounting legs 32 and the connection legs 35 of the connection terminals 30 can be inserted from above. Further, on both side plates 42, hooking pieces 44 facing diagonally upward outward are formed by cutting and raising a pair of front and rear.

これに対して、ソケット２１の上面における右側の領域では、放熱板４０の上面板４１がほぼ面一に嵌る凹面２４が形成され、その左右両側縁に、側板４２が差し込まれる差込溝２５が下面に貫通して形成されている。したがって右側の領域では、前後の挿入溝２２Ａ，２２Ｂがこの凹面２４に形成されており、放熱板４０の上面板４１の両窓孔４３は、両挿入溝２２Ａ，２２Ｂと整合した位置に形成されている。
また、図２に示すように、左側の差込溝２５における左側面と、右側の差込溝２５における右側面には、それぞれ前後２箇所ずつ、両側板４２の掛止片４４が掛止される掛止溝２６が形成されている。 On the other hand, in the region on the right side of the upper surface of the socket 21, a concave surface 24 in which the upper surface plate 41 of the heat radiating plate 40 fits substantially flush is formed. It is formed through the lower surface. Accordingly, in the right region, the front and rear insertion grooves 22A and 22B are formed in the concave surface 24, and both the window holes 43 of the upper surface plate 41 of the heat radiating plate 40 are formed at positions aligned with both the insertion grooves 22A and 22B. ing.
In addition, as shown in FIG. 2, the latching pieces 44 of the both side plates 42 are latched on the left side surface of the left insertion groove 25 and the right side surface of the right insertion groove 25 at two positions on the front and rear, respectively. A retaining groove 26 is formed.

ソケット２１の下面には、接続端子３０の接続脚３５が挿入される後側の挿入溝２２Ｂの下方に対応して、四角柱状をなす電線圧接部２７が一体に突設されている。この電線圧接部２７には、左右の幅方向の中央部において、被覆電線５０を下方から径方向に挿入可能な前後方向に貫通した電線挿入溝２８が、全高にわたって形成されている。一方、後側の挿入溝２２Ｂの直下に連通して、同幅の圧接刃挿入溝２９が下面に開放して形成されている。圧接刃挿入溝２９は電線挿入溝２８と直交して形成されている。   On the lower surface of the socket 21, an electric wire pressure contact portion 27 having a quadrangular prism shape is integrally projected so as to correspond to a lower portion of the rear insertion groove 22 </ b> B into which the connection leg 35 of the connection terminal 30 is inserted. In the wire pressure contact portion 27, a wire insertion groove 28 penetrating in the front-rear direction in which the covered wire 50 can be inserted in the radial direction from below is formed in the center portion in the left and right width direction over the entire height. On the other hand, a press-contact blade insertion groove 29 having the same width is formed on the lower surface so as to communicate directly below the rear insertion groove 22B. The press contact blade insertion groove 29 is formed orthogonal to the wire insertion groove 28.

組み付けは以下のようにして行われる。各ユニットＵにおいて、まず放熱板４０の両側板４２が、ソケット２１の凹面２４における左右の差込溝２５に差し込まれる。差し込みの終盤になると、放熱板４０の掛止片４４が弾性変形しつつ押し込まれ、上面板４１が凹面２４に嵌るまで押し込まれると、図５に示すように、掛止片４４が復元して掛止溝２６に嵌ることで、放熱板４０が抜け止めされて取り付けられる。この状態では、両側板４２の下端側がソケット２１の下面に大きく突出するとともに、凹面２４の前後の挿入溝２２Ａ，２２Ｂと、上面板４１の窓孔４３とが連通した状態となる。   Assembly is performed as follows. In each unit U, first, the both side plates 42 of the heat radiating plate 40 are inserted into the left and right insertion grooves 25 in the concave surface 24 of the socket 21. At the end of the insertion, the latching piece 44 of the heat radiating plate 40 is pushed in while being elastically deformed. When the top plate 41 is pushed into the concave surface 24, the latching piece 44 is restored as shown in FIG. By fitting in the retaining groove 26, the heat radiating plate 40 is prevented from coming off and attached. In this state, the lower end side of both side plates 42 protrudes greatly from the lower surface of the socket 21, and the insertion grooves 22 </ b> A and 22 </ b> B before and after the concave surface 24 communicate with the window holes 43 of the upper surface plate 41.

次に、ＬＥＤ１０がソケット２１の上面に載置される。ＬＥＤ１０は、目印１４によって、負側のリード端子１３Ｂが右を向いた姿勢を取り、負側のリード端子１３Ｂが、上記した放熱板４０の上面板４１における前後の窓孔４３の間の位置に、一方の正側のリード端子１３Ａが、ソケット２１の上面の左側の領域における前後の挿入溝２２Ａ，２２Ｂの間の位置にそれぞれ載せられる。
最後に両接続端子３０が、ともに取付脚３２を手前にした姿勢で装着される。右側の接続端子３０は、取付脚３２と接続脚３５とが放熱板４０の窓孔４３を通して凹面２４における前後の挿入溝２２Ａ，２２Ｂに挿入される。接続端子３０は、取付片３３と係止片３８とが弾性変形しつつ押し込まれ、弾性接触部３１が負側のリード端子１３Ｂに当たったのち、弾性変形しつつさらに所定量押し込まれたところで、図６に示すように、取付片３３と係止片３８とが復元して係止溝２３Ａ，２３Ｂに嵌って抜け止めされる。弾性接触部３１は、その弾発力により、負側のリード端子１３Ｂを放熱板４０の上面板４１に押し付ける。 Next, the LED 10 is placed on the upper surface of the socket 21. The LED 10 takes a posture in which the negative lead terminal 13B faces right by the mark 14, and the negative lead terminal 13B is positioned at a position between the front and rear window holes 43 in the upper surface plate 41 of the heat radiating plate 40 described above. One positive lead terminal 13 </ b> A is placed at a position between the front and rear insertion grooves 22 </ b> A and 22 </ b> B in the left region of the upper surface of the socket 21.
Finally, both connection terminals 30 are mounted in a posture with the mounting legs 32 facing forward. In the right connection terminal 30, the mounting leg 32 and the connection leg 35 are inserted into the front and rear insertion grooves 22 </ b> A and 22 </ b> B in the concave surface 24 through the window hole 43 of the heat radiating plate 40. The connection terminal 30 is pushed in while the mounting piece 33 and the locking piece 38 are elastically deformed, and after the elastic contact portion 31 hits the negative lead terminal 13B, it is further pushed in a predetermined amount while elastically deforming. As shown in FIG. 6, the mounting piece 33 and the locking piece 38 are restored and fitted into the locking grooves 23A and 23B to be prevented from coming off. The elastic contact portion 31 presses the negative lead terminal 13 </ b> B against the upper surface plate 41 of the heat radiating plate 40 by its elastic force.

左側の接続端子３０は、取付脚３２と接続脚３５とがソケット２１の上面の左側の領域における前後の挿入溝２２Ａ，２２Ｂに挿入される。接続端子３０は、同じく取付片３３と係止片３８とが弾性変形しつつ押し込まれ、弾性接触部３１が正側のリード端子１３Ａに当たったのち、弾性変形しつつさらに所定量押し込まれたところで、取付片３３と係止片３８とが復元して係止溝２３Ａ，２３Ｂに嵌って抜け止めされる。弾性接触部３１は、弾発力で正側のリード端子１３Ａに押し付けられる。
また、両接続端子３０の各圧接刃３６は、図５に示すように、電線圧接部２７の圧接刃挿入溝２９内に上方から挿入される。 In the left connection terminal 30, the attachment leg 32 and the connection leg 35 are inserted into the front and rear insertion grooves 22 </ b> A and 22 </ b> B in the left region of the upper surface of the socket 21. Similarly, the connection terminal 30 is pushed in while the attachment piece 33 and the locking piece 38 are elastically deformed, and after the elastic contact portion 31 hits the positive lead terminal 13A, it is further pushed in a predetermined amount while being elastically deformed. The mounting piece 33 and the locking piece 38 are restored and fitted into the locking grooves 23A and 23B to be prevented from coming off. The elastic contact portion 31 is pressed against the positive lead terminal 13A by an elastic force.
Further, as shown in FIG. 5, the press contact blades 36 of both connection terminals 30 are inserted into the press contact blade insertion grooves 29 of the wire press contact portion 27 from above.

以上によって各ＬＥＤユニットＵの組み付けが完了し、このＬＥＤユニットＵでは、ＬＥＤ１０の正負のリード端子１３Ａ，１３Ｂが、それぞれ圧接刃３６を有する接続端子３０に接続され、かつ負側のリード端子１３Ｂには、併せて放熱板４０が接続された状態とされる。放熱板４０は、上記したようにソケット２１の下面に大きく突出される。また、圧接刃３６は、圧接刃挿入溝２９に挿入され、圧接溝３７が電線挿入溝２８と整合した状態となる。   Thus, the assembly of each LED unit U is completed. In this LED unit U, the positive and negative lead terminals 13A and 13B of the LED 10 are connected to the connection terminal 30 having the press contact blade 36, respectively, and are connected to the negative lead terminal 13B. In addition, the heat sink 40 is connected. As described above, the heat radiating plate 40 protrudes greatly from the lower surface of the socket 21. The press contact blade 36 is inserted into the press contact blade insertion groove 29, and the press contact groove 37 is aligned with the wire insertion groove 28.

各ＬＥＤユニットＵの組み付けが完了したら、各ＬＥＤ１０間が所定に接続される。この実施形態では、図８に示すように、縦に階段状に配された３個のＬＥＤ１０が直列に接続され、この３個一組が並列接続される。そのため、ＬＥＤ１０間の接続としては、各組において、隣り合うＬＥＤユニットＵの間で、正側の接続端子３０と負側の接続端子３０とが順次に接続されることになる。   When the assembly of the LED units U is completed, the LEDs 10 are connected to each other in a predetermined manner. In this embodiment, as shown in FIG. 8, three LEDs 10 arranged in a vertical staircase pattern are connected in series, and a set of three is connected in parallel. Therefore, as a connection between the LEDs 10, the positive connection terminal 30 and the negative connection terminal 30 are sequentially connected between the adjacent LED units U in each group.

接続用の導電路には、被覆電線５０が使用される。被覆電線５０は、各接続端子３０の圧接刃３６に圧接される。例えば図５及び図６に示すように、被覆電線５０における所定の圧接位置が、圧接用の治具５５によって電線圧接部２７の電線挿入溝２８に下方から挿入されて、引き続いて圧接刃３６の圧接溝３７に下方から押し込まれ、それに伴い被覆電線５０の被覆５１が破断されて圧接刃３６が芯線５２と接触する。これにより、ＬＥＤユニットＵにおけるＬＥＤ１０のリード端子１３Ａ，１３Ｂが、対応する被覆電線５０と電気的に接続されることになる。
治具５５は、被覆電線５０の圧接の完了後に外される。なお治具５５と同様の形状の受け台を別途形成して、ソケット２１の下面に取付可能としておき、被覆電線５０の圧接後にソケット２１の下面に引き続いて残すようにしてもよい。 The covered electric wire 50 is used for the conductive path for connection. The covered electric wire 50 is pressed against the press contact blade 36 of each connection terminal 30. For example, as shown in FIGS. 5 and 6, a predetermined pressure contact position in the covered electric wire 50 is inserted from below into the wire insertion groove 28 of the wire pressure contact portion 27 by the pressure welding jig 55, and subsequently, the pressure contact blade 36. It is pushed into the press contact groove 37 from below, and accordingly, the covering 51 of the covered electric wire 50 is broken and the press contact blade 36 contacts the core wire 52. Thereby, the lead terminals 13A and 13B of the LED 10 in the LED unit U are electrically connected to the corresponding covered electric wire 50.
The jig 55 is removed after the pressure welding of the covered electric wire 50 is completed. A cradle having the same shape as that of the jig 55 may be separately formed so that it can be attached to the lower surface of the socket 21, and may remain on the lower surface of the socket 21 after the covered wire 50 is pressed.

このように接続されたＬＥＤ１０群は、ダイオード、抵抗等からなる制御回路（図示せず）を介して、電源側と接続される。
そして例えば夜間等には、テール用入力信号として所定値の電流が常時通電されて、ＬＥＤ１０がテールランプとして機能すべく相対的に低い輝度で点灯し、その間ブレーキ操作がなされると、ストップ用入力信号として、テール用と比べて数倍の値の電流が通電され、ＬＥＤ１０がストップランプとして機能すべく高輝度で点灯するようになっている。
またＬＥＤ１０は通電されると、特に負側で発熱する傾向にあるが、負側のリード端子１３Ｂには、ソケット２１の下面に大きく突出した放熱板４０が接続されているから、熱が放熱板４０によって有効に放散される。 The LEDs 10 connected in this way are connected to the power supply side via a control circuit (not shown) including a diode, a resistor, and the like.
For example, at night, a current of a predetermined value is always applied as a tail input signal, and the LED 10 is turned on with a relatively low luminance so as to function as a tail lamp. As a result, a current several times larger than that for the tail is energized, and the LED 10 is lit with high brightness so as to function as a stop lamp.
Further, when the LED 10 is energized, it tends to generate heat particularly on the negative side. However, since the heat sink 40 that protrudes greatly from the lower surface of the socket 21 is connected to the negative lead terminal 13B, the heat is dissipated. 40 is effectively dissipated.

以上説明したように本実施形態によれば、ＬＥＤ１０を導電路である被覆電線５０に接続する作業としては、そのＬＥＤ１０が組み込まれたＬＥＤユニットＵに設けられた接続端子３０の圧接刃３６を被覆電線５０に圧接するだけで良いから、簡単に行うことができる。また、ＬＥＤ１０をレーザ溶接で導電路に接続する場合と違って、ＬＥＤ１０に熱的負荷が掛からないから、輝度低下を招くことも防止される。   As described above, according to this embodiment, as an operation of connecting the LED 10 to the covered electric wire 50 that is a conductive path, the pressure contact blade 36 of the connection terminal 30 provided in the LED unit U in which the LED 10 is incorporated is covered. Since it is only necessary to press-contact the electric wire 50, it can be performed easily. In addition, unlike the case where the LED 10 is connected to the conductive path by laser welding, the LED 10 is not subjected to a thermal load, so that it is possible to prevent a decrease in luminance.

また、通電されると発熱する傾向にあるＬＥＤ１０の負側のリード端子１３Ｂには、放熱板４０が接続されているから、放熱が効率良く行われ、そのためＬＥＤ１０の故障が少なくでき、また耐用寿命も延ばすことができる。
特に、放熱板４０を別体として備えたことで、放熱板４０には安価な鉄板が使用できる。もって製造コストの低減を図ることができる。 Further, since the heat sink 40 is connected to the negative lead terminal 13B of the LED 10 that tends to generate heat when energized, heat dissipation is performed efficiently, so that the failure of the LED 10 can be reduced, and the service life is shortened. Can also be extended.
In particular, by providing the heat sink 40 as a separate body, an inexpensive iron plate can be used for the heat sink 40. Therefore, the manufacturing cost can be reduced.

導電路を被覆電線５０としたことで、その長さを変えたり、適宜に湾曲して配線することにより、ＬＥＤ１０の配置の自由度を広げることができる。ただこの実施形態では、各ＬＥＤユニットＵのソケット２１が一体的に形成されているため、ＬＥＤ１０の配置が変われば、各ＬＥＤユニットＵのソケット２１の配置、すなわちベース２０の形状は変更する必要があるが、少なくとも、導電路である被覆電線５０側の事情によってＬＥＤユニットＵの配置が制限されることは避けられる。   Since the conductive path is the covered electric wire 50, the degree of freedom of the arrangement of the LEDs 10 can be increased by changing the length of the conductive path or by appropriately bending the wiring. However, in this embodiment, since the socket 21 of each LED unit U is integrally formed, if the arrangement of the LED 10 is changed, the arrangement of the socket 21 of each LED unit U, that is, the shape of the base 20 needs to be changed. However, it is possible to avoid that the arrangement of the LED units U is restricted at least due to the situation on the side of the covered electric wire 50 that is a conductive path.

＜他の実施形態＞
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
（１）接続用の導電路には、被覆電線に代えて、被覆のない裸電線を用いてもよい。その場合接続端子には、圧接刃に代えて、切断機能を持たず裸電線を弾性的に挟圧することのみに機能する圧接部を形成するとよい。
（２）放熱板は、負側の接続端子に一体形成されていてもよい。この場合、放熱板も素材がばね鋼板となるため、材料費としては高くなるが、部品点数は減ることからコスト上昇も最小限に抑えられ、実効がある。
（３）各ソケットがベースとして一体形成されておらずに分割されていて、それぞれに組み付けられるようになっていれば、ベースをいちいち製造し直さなくても、ユニットごとその組み付けの配置を代えることで、ＬＥＤの配置の変更に対応することができる。 <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) Instead of a covered electric wire, an uncovered bare electric wire may be used for the conductive path for connection. In that case, instead of the press contact blade, the connection terminal may be formed with a press contact portion that does not have a cutting function and functions only to pinch the bare wire elastically.
(2) The heat sink may be formed integrally with the negative connection terminal. In this case, since the material of the heat radiating plate is a spring steel plate, the material cost is high. However, since the number of parts is reduced, the cost increase is minimized and effective.
(3) If each socket is not integrally formed as a base but is divided and can be assembled to each other, the assembly arrangement of each unit can be changed without having to remanufacture the base. Thus, it is possible to cope with a change in the arrangement of the LEDs.

本発明の一実施形態に係るＬＥＤユニットの分解斜視図The disassembled perspective view of the LED unit which concerns on one Embodiment of this invention. 同正面から見た分解断面図Exploded sectional view from the front 同側面から見た分解断面図Exploded sectional view from the same side ユニットの組付完了時の斜視図Perspective view when unit assembly is complete 被覆電線の圧接動作を示す正面からの断面図Sectional view from the front showing the pressure welding operation of a covered wire 同側面からの断面図Cross section from the same side ランプの全体構造の斜視図Perspective view of the overall structure of the lamp 同平面図Plan view 同一部切欠側面図Same part cutaway side view

符号の説明Explanation of symbols

Ｕ…ＬＥＤユニット
１０…ＬＥＤ（発光素子）
１３Ａ，１３Ｂ…リード端子
２１…ソケット
３０…接続端子
３６…圧接刃（圧接部）
４０…放熱板
５０…被覆電線（電線）
５１…被覆
５２…芯線 U ... LED unit 10 ... LED (light emitting element)
13A, 13B ... Lead terminal 21 ... Socket 30 ... Connection terminal 36 ... Pressure contact blade (pressure contact part)
40 ... Radiating plate 50 ... Coated wire (electric wire)
51 ... Coating 52 ... Core

Claims (3)

発光素子が装着されるソケットには、前記発光素子の各リード端子と個々に弾力的に接続される接続端子が設けられ、各接続端子には、電線に圧接可能な圧接部が設けられていることを特徴とする発光素子ユニット。 A socket to which the light emitting element is mounted is provided with a connection terminal that is elastically connected to each lead terminal of the light emitting element, and each connection terminal is provided with a pressure contact portion that can be pressed against an electric wire. The light emitting element unit characterized by the above-mentioned. 少なくとも負側のリード端子と接続される接続端子には、放熱板が設けられていることを特徴とする請求項１記載の発光素子ユニット。 The light emitting element unit according to claim 1, wherein a heat radiating plate is provided on at least the connection terminal connected to the negative lead terminal. 前記放熱板が前記接続端子とは別体に形成されていることを特徴とする請求項２記載の発光素子ユニット。 The light-emitting element unit according to claim 2, wherein the heat dissipation plate is formed separately from the connection terminal.
JP2004025371A 2004-02-02 2004-02-02 Light emitting device unit Pending JP2005217354A (en)

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