JP2009224172A

JP2009224172A - Retaining structure of light-emitting diode

Info

Publication number: JP2009224172A
Application number: JP2008067126A
Authority: JP
Inventors: Kiyoshi Naito; 紀与志内藤
Original assignee: Kenwood KK
Current assignee: Kenwood KK
Priority date: 2008-03-17
Filing date: 2008-03-17
Publication date: 2009-10-01

Abstract

<P>PROBLEM TO BE SOLVED: To provide a retaining structure of LEDs in which a manufacturing cost is made low by reducing the number of the LEDs to be used, and in which light irradiated backward of the LED is used effectively as radiation light in the peripheral direction. <P>SOLUTION: An inclined face 2a inclined from the tip toward the periphery is installed at an LED retaining base 2 to retain the LED by inserting through a lead wire 1a of the LED 1, and the light irradiated from the LED 1 to the backward is reflected in the peripheral direction on the inclined face 2a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

この発明はＬＥＤの保持構造に係わり、特に、ＬＥＤの放射光の利用手段に関する。 The present invention relates to an LED holding structure, and more particularly, to means for using emitted light of an LED.

実開平６−２１０８５号公報に開示された従来のＬＥＤの保持構造を図５により説明する。図５（ａ）は実開平６−２１０８５号公報に開示された従来のＬＥＤの保持構造を示す分解斜視図、図５（ｂ）は同ＬＥＤの保持構造を示す断面図である。 A conventional LED holding structure disclosed in Japanese Utility Model Laid-Open No. 6-21085 will be described with reference to FIG. FIG. 5A is an exploded perspective view showing a conventional LED holding structure disclosed in Japanese Utility Model Laid-Open No. 6-21085, and FIG. 5B is a cross-sectional view showing the LED holding structure.

図５に示すように、ＬＥＤ１のリード線１ａ、１ａはプリント基板Ａの丸穴Ａｂ、Ａｂに挿通されプリント基板の導体パターンに半田付けされることによりＬＥＤ１がプリント基板Ａに実装される。カバーＢの係止片Ｂａ、Ｂａはプリント基板Ａの係止穴Ａａ、Ａａを挿通してプリント基板Ａを係止することによりカバーＢがプリント基板Ａに固定される。 As shown in FIG. 5, the lead wires 1 a and 1 a of the LED 1 are inserted into the round holes Ab and Ab of the printed circuit board A and soldered to the conductor pattern of the printed circuit board A so that the LED 1 is mounted on the printed circuit board A. The cover B is fixed to the printed circuit board A by inserting the locking pieces Ba, Ba of the cover B through the locking holes Aa, Aa of the printed circuit board A and locking the printed circuit board A.

このようにして、カバーＢがＬＥＤ１の周囲を囲むように配置されることにより、ＬＥＤ１はカバーＢの内周面Ｂｂにより動きが規制されて、プリント基板Ａに対して垂直に保持される。ＬＥＤ１は一般に図６の点線矢印で示すように前方および後方の所定の放射角範囲に大部分の光が放射されるが、この例では、図５（ｂ）に示すように、前方に放射された光がカバーＢの内周面Ｂｂで反射されることにより矢印Ｈ方向の狭い放射角に集光されて放射される。 In this manner, the cover B is disposed so as to surround the periphery of the LED 1, so that the movement of the LED 1 is restricted by the inner peripheral surface Bb of the cover B and is held perpendicular to the printed circuit board A. The LED 1 generally emits most of the light in a predetermined range of radiation angles forward and backward as indicated by the dotted arrows in FIG. 6, but in this example, as shown in FIG. The reflected light is reflected by the inner peripheral surface Bb of the cover B, and is collected and emitted at a narrow radiation angle in the direction of arrow H.

この例では、ＬＥＤから光が狭い範囲に集光されて光の明るさが強められるが、横方向の放射が必要な場合には１個のＬＥＤでその機能を果たすことができないという問題があった。また、ＬＥＤから後方に放射される光が有効に利用できないという問題があつた。 In this example, the light from the LED is condensed in a narrow range to increase the brightness of the light, but there is a problem that the function cannot be performed by one LED when lateral radiation is required. It was. In addition, there is a problem that light emitted backward from the LED cannot be used effectively.

図７に示す従来のＬＥＤの保持構造の他の例では、図示していないＬＥＤ保持ベースの上に透光性樹脂で作られたリフレクタ１０が固定されている。リフレクタ１０はＬＥＤ１に被せられており、上端面に円錐状半斜面１０ａが形成されている。 In another example of the conventional LED holding structure shown in FIG. 7, a reflector 10 made of a translucent resin is fixed on an LED holding base (not shown). The reflector 10 is covered with the LED 1 and has a conical semi-slope 10a formed on the upper end surface.

ＬＥＤ１から前方に放射された光はその一部が図７に点線矢印に示するように円錐状半斜面１０ａで周囲方向に反射され、その残部は円錐状半斜面１０ａで屈折されて前方に放射される。このＬＥＤの保持構造によると、１個のＬＥＤから前方と周辺方向とに光を導くことができるが、保持ベースに透光性樹脂のリフレクタ１０を固定する必要があり、製造コストが高くなるという問題があった。また、ＬＥＤ後方に放射される光を有効に利用できないという問題もあった。 A part of the light emitted forward from the LED 1 is reflected in the circumferential direction by the conical half-slope 10a as shown by a dotted arrow in FIG. 7, and the remaining part is refracted by the conical half-slope 10a and emitted forward. Is done. According to this LED holding structure, light can be guided from one LED to the front and the peripheral direction, but it is necessary to fix the reflector 10 of the translucent resin to the holding base, which increases the manufacturing cost. There was a problem. Moreover, there also existed a problem that the light radiated | emitted behind LED could not be utilized effectively.

図８に示す従来のＬＥＤの保持構造のさらに他の例では、図示していないＬＥＤ保持ベースに３個のＬＥＤが保持されている。そして、中央に配置されたＬＥＤ１に対して他のＬＥＤ１、１は光軸を９０°交差させている。 In still another example of the conventional LED holding structure shown in FIG. 8, three LEDs are held on an LED holding base (not shown). And other LED1,1 crosses the optical axis 90 degrees with respect to LED1 arrange | positioned in the center.

図８に点線矢印で示すように、中央に配置されたＬＥＤ１の前方に出射され光はこのＬＥＤ１が正立姿勢に配置されているため、前方に放射され、左右に配置されたＬＥＤ１、１の光はこれらのＬＥＤ１、１が横向きに配置されているため、側方に放射される。 As indicated by a dotted arrow in FIG. 8, since the LED 1 is arranged in an upright posture, the light emitted to the front of the LED 1 arranged in the center is radiated forward, and the LEDs 1 and 1 arranged on the left and right are arranged. The light is emitted to the side because these LEDs 1, 1 are arranged sideways.

このＬＥＤの保持構造によると、１個のＬＥＤから前方と周辺方向とに光を導くことができないため、中央のＬＥＤの前方と周辺方向に光を放射させるために複数のＬＥＤを必要とし、さらに、ＬＥＤ保持ベースの構造やＬＥＤ１のリード線１ａ、１ａ…の実装方法が面倒となるため、製造コストが増大するという問題があった。また、ＬＥＤ後方に放射される光を有効に利用できないという問題もあった。
実開平６−２１０８５号公報、段落００１０〜段落００１３、図１、図５ According to this LED holding structure, light cannot be guided from one LED in the forward and peripheral directions, and thus a plurality of LEDs are required to emit light in the forward and peripheral directions of the central LED. In addition, the structure of the LED holding base and the mounting method of the lead wires 1a, 1a,. Moreover, there also existed a problem that the light radiated | emitted behind LED could not be utilized effectively.
Japanese Utility Model Laid-Open No. 6-21085, paragraphs 0010 to 0013, FIGS. 1 and 5

この発明は上記した点に鑑みてなされたものであって、その目的とするところは、ＬＥＤの使用個数を少なくして製造コストを安くすると共に、ＬＥＤ後方に放射される光を周辺方向の放射光として有効に利用できるＬＥＤの保持構造を提供することにある。 The present invention has been made in view of the above points. The object of the present invention is to reduce the number of LEDs used to reduce the manufacturing cost and to radiate light emitted behind the LEDs in the peripheral direction. An object of the present invention is to provide an LED holding structure that can be used effectively as light.

この発明のＬＥＤの保持構造は、ＬＥＤのリード線を挿通してＬＥＤを保持するＬＥＤ保持ベースに先端から周辺に向けて傾斜する傾斜面を設け、前記傾斜面で前記ＬＥＤから後方に放射する光を周辺方向に反射させるものである。 In the LED holding structure of the present invention, an LED holding base that holds an LED through an LED lead wire is provided with an inclined surface that is inclined from the tip toward the periphery, and light that is emitted backward from the LED on the inclined surface. Is reflected in the peripheral direction.

また、前記ＬＥＤの保持構造において、前記傾斜面を円錐面としたものである。 In the LED holding structure, the inclined surface is a conical surface.

また、前記各ＬＥＤの保持構造において、前記傾斜面を有彩色に彩色したものである。 In the holding structure of each LED, the inclined surface is colored chromatic.

また、この発明のＬＥＤの保持構造は、ＬＥＤのリード線を挿通してＬＥＤを保持するＬＥＤ保持ベースに凹み面を設け、前記凹み面で前記ＬＥＤから後方に放射する光を周辺方向に屈折させるものである。 In the LED holding structure of the present invention, the LED holding base that holds the LED by inserting the LED lead wire is provided with a recessed surface, and the light emitted backward from the LED is refracted in the peripheral direction by the recessed surface. Is.

また、前記ＬＥＤの保持構造において、前記凹み面を部分球面としたものである。 In the LED holding structure, the concave surface is a partial spherical surface.

この発明のＬＥＤの保持構造によれば、ＬＥＤの使用個数を少なくして製造コストを安くすると共にＬＥＤ後方に放射される光を周辺方向の放射光として有効に利用できる。 According to the LED holding structure of the present invention, the number of LEDs used can be reduced to reduce the manufacturing cost, and the light emitted to the rear of the LED can be effectively used as the emitted light in the peripheral direction.

以下この発明を実施するための最良の形態を実施例に即して説明する。 The best mode for carrying out the present invention will be described below with reference to examples.

図１（ａ）はこの発明の実施例１であるＬＥＤの保持構造を示す分解斜視図、図１（ｂ）は同ＬＥＤの保持構造を示す斜視図である。図１（ａ）および図１（ｂ）に示すように、ＬＥＤ１のリード線１ａ、１ａはＬＥＤ保持ベース２のリード線挿通穴２ｂ、２ｂを挿通して図示していないプリント基板の導体パターンに半田付けされる。なお、ＬＥＤ保持ベース２は図１では図示していないが、従来例で説明したように係止片でプリント基板に係止させてもよく、プリント基板の穴に圧入してもよい。 FIG. 1A is an exploded perspective view showing an LED holding structure according to Embodiment 1 of the present invention, and FIG. 1B is a perspective view showing the LED holding structure. As shown in FIGS. 1A and 1B, the lead wires 1a and 1a of the LED 1 are inserted into the lead wire insertion holes 2b and 2b of the LED holding base 2 to form a conductor pattern of a printed circuit board (not shown). Soldered. Although the LED holding base 2 is not shown in FIG. 1, it may be locked to the printed board with the locking piece as described in the conventional example, or may be press-fitted into the hole of the printed board.

ＬＥＤ保持ベース２は乳白色の合成樹脂で作られ、上部に円錐状傾斜面２ａが形成されている。図１（ｂ）に点線矢印で示すように、ＬＥＤ１から前方に放射される光はそのまま外部に放射され、ＬＥＤ１から後方に放射される光はＬＥＤ保持ベース２の円錐状傾斜面２ａで反射され周辺方向の放射光として有効に利用できる。そして、１個のＬＥＤで正面方向の照明および周辺方向の照明ができるので、製造コストが安くなる。 The LED holding base 2 is made of milky white synthetic resin, and has a conical inclined surface 2a formed on the top. As shown by a dotted arrow in FIG. 1B, the light emitted forward from the LED 1 is emitted to the outside as it is, and the light emitted backward from the LED 1 is reflected by the conical inclined surface 2 a of the LED holding base 2. It can be used effectively as radiation in the peripheral direction. And since the illumination of the front direction and the illumination of the peripheral direction can be performed with one LED, the manufacturing cost is reduced.

図２によりこの実施例の変形例を説明する。図２（ａ）に示すＬＥＤ保持ベース２は実施例１のものであり、円錐状傾斜面２ａの頂角は略９０°である。図２（ｂ）に示すＬＥＤ保持ベース３は実施例１の第１の変形例であり、実施例１のものと同様に円錐状傾斜面３ａとリード線挿通穴３ｂ、３ｂを有するが、円錐状傾斜面３ａの頂角は鈍角となっている。 A modification of this embodiment will be described with reference to FIG. The LED holding base 2 shown in FIG. 2A is that of Example 1, and the apex angle of the conical inclined surface 2a is approximately 90 °. The LED holding base 3 shown in FIG. 2B is a first modification of the first embodiment, and has a conical inclined surface 3a and lead wire insertion holes 3b and 3b as in the first embodiment. The vertical angle of the inclined surface 3a is an obtuse angle.

図２（ｃ）に示すＬＥＤ保持ベース４は実施例１の第２の変形例であり、実施例１のものと同様に円錐状傾斜面４ａとリード線挿通穴４ｂ、４ｂを有するが、円錐状傾斜面４ａの頂角はは鋭角となっている。このように、円錐状傾斜面の頂角を任意に設定することにより、周辺方向の放射光の向きや広がりを任意に設定することができる。 The LED holding base 4 shown in FIG. 2C is a second modification of the first embodiment, and has a conical inclined surface 4a and lead wire insertion holes 4b and 4b as in the first embodiment. The apex angle of the inclined surface 4a is an acute angle. Thus, the direction and spread of the emitted light in the peripheral direction can be arbitrarily set by arbitrarily setting the apex angle of the conical inclined surface.

図３はこの発明の実施例２であるＬＥＤの保持構造の部材を示す斜視図である。図３に示すＬＥＤ保持ベース５の形状は実施例１のものと同様であり、実施例１のものと同様に円錐状傾斜面５ａとリード線挿通穴５ｂ、５ｂを有するが、円錐状傾斜面５ａは有彩色に塗装されている。このようにして、周辺方向の放射光の色を変化させることができる。 3 is a perspective view showing members of an LED holding structure according to Embodiment 2 of the present invention. The shape of the LED holding base 5 shown in FIG. 3 is the same as that of the first embodiment, and has a conical inclined surface 5a and lead wire insertion holes 5b and 5b as in the first embodiment. 5a is painted in a chromatic color. In this way, the color of the emitted light in the peripheral direction can be changed.

図４（ａ）はこの発明の実施例３であるＬＥＤの保持構造の部材を示す斜視図、図４（ｂ）は同ＬＥＤの保持構造を示す断面図である。図４（ａ）および図４（ｂ）に示すＬＥＤ保持ベース６は透光性合成樹脂で作られており、上面が半球状屈折面６ａとなっている。そして、半球状屈折面６ａに開口するリード線挿通穴６ｂ、６ｂをＬＥＤ１のリード線１ａ、１ａが挿通する。 4A is a perspective view showing members of an LED holding structure according to Embodiment 3 of the present invention, and FIG. 4B is a cross-sectional view showing the LED holding structure. The LED holding base 6 shown in FIGS. 4A and 4B is made of a translucent synthetic resin, and the upper surface is a hemispherical refracting surface 6a. Then, the lead wires 1a and 1a of the LED 1 are inserted through the lead wire insertion holes 6b and 6b opened in the hemispherical refracting surface 6a.

この例ではＬＥＤ１から後方に放射される光が半球状屈折面６ａにより屈折されて周辺方向に放射される。このような構成によっても本願発明の効果が得られる。この例では、傾斜面が突出していないので、ＬＥＤ１が安定した状態で保持される。また、ＬＥＤ保持ベース６に設ける凹みが球面であるため、金型の製造コストが安くなる。しかも球面の曲率半径を任意に設定することにより周辺方向の光の放射状態を選定することが可能である。 In this example, the light emitted backward from the LED 1 is refracted by the hemispherical refracting surface 6a and emitted in the peripheral direction. The effect of the present invention can also be obtained by such a configuration. In this example, since the inclined surface does not protrude, the LED 1 is held in a stable state. Moreover, since the recess provided in the LED holding base 6 is a spherical surface, the manufacturing cost of the mold is reduced. Moreover, it is possible to select the light emission state in the peripheral direction by arbitrarily setting the radius of curvature of the spherical surface.

実施例は以上のように構成されているが発明はこれに限られず、例えば、円錐傾斜面は角錐傾斜面としてもよく、半球状屈折面は回転楕円面としてもよい。 The embodiment is configured as described above, but the invention is not limited to this. For example, the cone inclined surface may be a pyramid inclined surface, and the hemispherical refracting surface may be a spheroid.

図１（ａ）はこの発明の実施例１であるＬＥＤの保持構造を示す分解斜視図、図１（ｂ）は同ＬＥＤの保持構造を示す斜視図である。FIG. 1A is an exploded perspective view showing an LED holding structure according to Embodiment 1 of the present invention, and FIG. 1B is a perspective view showing the LED holding structure. 図２（ａ）は同ＬＥＤの保持構造の部材を同実施例の変形例と比較するための斜視図、図２（ｂ）は同実施例の変形例の部材を示す斜視図、図２（ｃ）は同実施例のさらに他の変形例の部材を示す斜視図である。2A is a perspective view for comparing a member of the LED holding structure with a modification of the embodiment, FIG. 2B is a perspective view showing a member of the modification of the embodiment, and FIG. c) is a perspective view showing a member of still another modification of the embodiment. この発明の実施例２であるＬＥＤの保持構造の部材を示す斜視図である。It is a perspective view which shows the member of the holding structure of LED which is Example 2 of this invention. 図４（ａ）はこの発明の実施例３であるＬＥＤの保持構造の部材を示す斜視図、図４（ｂ）は同ＬＥＤの保持構造を示す断面図である。4A is a perspective view showing members of an LED holding structure according to Embodiment 3 of the present invention, and FIG. 4B is a cross-sectional view showing the LED holding structure. 図５（ａ）は従来のＬＥＤの保持構造を示す分解斜視図、図５（ｂ）は同ＬＥＤの保持構造を示す断面図である。FIG. 5A is an exploded perspective view showing a conventional LED holding structure, and FIG. 5B is a cross-sectional view showing the LED holding structure. ＬＥＤの光放射方向を示す斜視図である。It is a perspective view which shows the light emission direction of LED. 従来のＬＥＤの保持構造の他の例を示す斜視図である。It is a perspective view which shows the other example of the holding structure of the conventional LED. 従来のＬＥＤの保持構造のさらに他の例を示す斜視図である。It is a perspective view which shows the further another example of the holding structure of the conventional LED.

符号の説明Explanation of symbols

１ＬＥＤ、１ａリード線
２ＬＥＤ保持ベース、２ａ円錐状傾斜面、２ｂリード線挿通穴
３ＬＥＤ保持ベース、３ａ円錐状傾斜面、３ｂリード線挿通穴
４ＬＥＤ保持ベース、４ａ円錐状傾斜面、４ｂリード線挿通穴
５ＬＥＤ保持ベース、５ａ円錐状傾斜面、５ｂリード線挿通穴
６ＬＥＤ保持ベース、６ａ半球状屈折面、６ｂリード線挿通穴
１０リフレクタ、１０ａ円錐状反射面 DESCRIPTION OF SYMBOLS 1 LED, 1a Lead wire 2 LED holding base, 2a Conical inclined surface, 2b Lead wire insertion hole 3 LED holding base, 3a Conical inclined surface, 3b Lead wire insertion hole 4 LED holding base, 4a Conical inclined surface, 4b Lead wire insertion hole 5 LED holding base, 5a conical inclined surface, 5b Lead wire insertion hole 6 LED holding base, 6a hemispherical refracting surface, 6b Lead wire insertion hole 10 reflector, 10a conical reflecting surface

Claims

ＬＥＤのリード線を挿通してＬＥＤを保持するＬＥＤ保持ベースに先端から周辺に向けて傾斜する傾斜面を設け、前記傾斜面で前記ＬＥＤから後方に放射する光を周辺方向に反射させることを特徴とするＬＥＤの保持構造。 An LED holding base that holds the LED by inserting the LED lead wire is provided with an inclined surface that is inclined from the tip toward the periphery, and the light emitted backward from the LED is reflected by the inclined surface in the peripheral direction. LED holding structure.

前記傾斜面が円錐面である請求項１のＬＥＤの保持構造。 The LED holding structure according to claim 1, wherein the inclined surface is a conical surface.

前記傾斜面を有彩色に彩色した請求項１または２のＬＥＤの保持構造。 The LED holding structure according to claim 1, wherein the inclined surface is colored chromatic.

ＬＥＤのリード線を挿通してＬＥＤを保持するＬＥＤ保持ベースに凹み面を設け、前記凹み面で前記ＬＥＤから後方に放射する光を周辺方向に屈折させることを特徴とするＬＥＤの保持構造。 An LED holding structure, wherein a concave surface is provided on an LED holding base that holds an LED through an LED lead wire, and light emitted backward from the LED is refracted in the peripheral direction by the concave surface.

前記凹み面が部分球面である請求項４のＬＥＤの保持構造。 The LED holding structure according to claim 4, wherein the concave surface is a partial spherical surface.