JP2010277789A - Rotating light equipped with blower fan - Google Patents

Rotating light equipped with blower fan Download PDF

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JP2010277789A
JP2010277789A JP2009127996A JP2009127996A JP2010277789A JP 2010277789 A JP2010277789 A JP 2010277789A JP 2009127996 A JP2009127996 A JP 2009127996A JP 2009127996 A JP2009127996 A JP 2009127996A JP 2010277789 A JP2010277789 A JP 2010277789A
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light source
blower fan
led light
fixed shaft
disk
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JP5586875B2 (en
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Kazuhisa Mochizuki
和久 望月
Toichi Kamimura
東壱 上村
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Koito Manufacturing Co Ltd
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Koito Manufacturing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotating light unit with LEDs used as a light source in which the LED light source is cooled forcibly by a blower fan and a driving source dedicated for the fan is dispensed with, and a whole of the unit is structured in a small size and light weight. <P>SOLUTION: A fixed shaft 20 is provided upright on a chassis 9 of a rotating light unit 7, and a substrate 22 of the LED light source 11 is held on an upper surface of a light source base 10 arranged on its top end. A reflector 12 reflecting light of the LED light source 11 is held on a disc 13, and the disc 13 is rotated by a motor 15 around an axial line (A) of the fixed shaft 20. Blades 18a of a blower fan 18 are integrally formed inside a cylindrical part 28 of the disc 13 and radiator fins 24 which receive wind (W) from the blower fan 18 are arranged hung downward on a lower surface of the light source base 10. The blower fan 18 blows the wind (W) from a side on to the LED light source 11 and the radiator fins 24 to carry out forced cooling of heating parts of the rotating light unit 17. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、緊急車両や工事車両等に装備される回転灯、特に、光源にＬＥＤを用いた回転灯ユニットに関する。   The present invention relates to a rotating lamp equipped in an emergency vehicle or a construction vehicle, and more particularly to a rotating lamp unit using an LED as a light source.

従来、ＬＥＤ光源の回りでリフレクタをモーターにより回転する回転灯ユニットが知られている。例えば、特許文献１には、ケース内側の灯室に固定軸を立設し、固定軸の上端に光源ベースを介してＬＥＤ光源を保持し、ＬＥＤ光源からの光を反射する大小２つのリフレクタをディスク上に設置し、ディスクをモーターで回転する回転警告灯が記載されている。   Conventionally, a rotating lamp unit that rotates a reflector around a LED light source by a motor is known. For example, in Patent Document 1, a fixed shaft is erected in a lamp chamber inside a case, an LED light source is held at the upper end of the fixed shaft via a light source base, and two large and small reflectors that reflect light from the LED light source are provided. There is a rotating warning light that is installed on the disk and rotates the disk with a motor.

特開２００７−２９４２７１号公報JP 2007-294271 A

ところで、この種の回転灯ユニットでは、ＬＥＤ自身の発熱に加えモ−ターの熱で灯室内部が高温に加熱される。特に、輝度を高めるためにＬＥＤ光源に大きな駆動電流を流すと、ＬＥＤ基板上の部品が熱損を受けやすくなる。放熱対策として、従来は、光源ベースにアルミ板を使用していたが、ベースからの自然放熱では十分な冷却効果が得られなかった。このため、駆動電流を制限するか、あるいは、大きな面積の光源ベースを使用する必要があり、高輝度回転灯ユニットの小型化を妨げるという問題点があった。   In this type of rotating lamp unit, the interior of the lamp chamber is heated to a high temperature by the heat of the motor in addition to the heat generated by the LED itself. In particular, when a large drive current is passed through the LED light source in order to increase the brightness, the components on the LED substrate are likely to be subject to heat loss. Conventionally, an aluminum plate was used for the light source base as a heat dissipation measure, but a sufficient cooling effect could not be obtained by natural heat dissipation from the base. For this reason, it is necessary to limit the driving current or use a light source base having a large area, which hinders miniaturization of the high-intensity rotating lamp unit.

そこで、本発明の目的は、ＬＥＤ光源をファンによって強制冷却でき、ファン専用の駆動源を不要にし、全体を小型軽量に構成できる回転灯ユニットを提供することにある。   SUMMARY OF THE INVENTION An object of the present invention is to provide a rotating lamp unit in which an LED light source can be forcibly cooled by a fan, a drive source dedicated to the fan is not required, and the entire structure can be made compact and lightweight.

上記課題を解決するために、本発明は、シャーシに固定された固定軸と、固定軸に保持されたＬＥＤ光源と、ＬＥＤ光源からの光を反射するリフレクタと、リフレクタを支持するディスクと、ディスクを固定軸の周りで回転する駆動機構とを備えた回転灯ユニットにおいて、次のような手段を採用したことを特徴とする。   In order to solve the above problems, the present invention provides a fixed shaft fixed to a chassis, an LED light source held on the fixed shaft, a reflector that reflects light from the LED light source, a disk that supports the reflector, and a disk A rotating lamp unit having a drive mechanism for rotating the lamp around a fixed axis is characterized by employing the following means.

（１）ディスクにＬＥＤ光源を冷却する送風ファンを形成したことを特徴とする回転灯ユニット。   (1) A rotating lamp unit in which a blower fan for cooling an LED light source is formed on a disk.

（２）固定軸に金属製の光源ベースを設け、光源ベースにＬＥＤ光源の基板を接合し、基板と反対側の光源ベースに送風ファンからの風を受ける風受け部を形成したことを特徴とする（１）に記載の回転灯ユニット。   (2) A metal light source base is provided on the fixed shaft, an LED light source substrate is joined to the light source base, and a wind receiving portion for receiving wind from the blower fan is formed on the light source base opposite to the substrate. The rotating lamp unit according to (1).

（３）送風ファンをＬＥＤ光源の側方に位置するようにディスクに形成したことを特徴とする（２）に記載の回転灯ユニット。   (3) The rotating lamp unit according to (2), wherein the blower fan is formed on the disk so as to be positioned on the side of the LED light source.

（４）送風ファンを固定軸の軸線方向から光源ベースと対向するようにディスクに形成したことを特徴とする（２）に記載の回転灯ユニット。   (4) The rotating lamp unit according to (2), wherein the blower fan is formed on the disk so as to face the light source base from the axial direction of the fixed shaft.

（５）風受け部が複数の放熱フィンを含むことを特徴とする（２）〜（４）の何れか一つに記載の回転灯ユニット。   (5) The rotating light unit according to any one of (2) to (4), wherein the wind receiving portion includes a plurality of radiating fins.

上記（１）の回転灯ユニットによれば、リフレクタを支持するディスクに送風ファンを形成したので、ディスクの回転に連動して送風ファンを回転し、送風ファンからの風でＬＥＤ光源を強制冷却できるとともに、ファン専用の駆動源を省いて、ユニット全体を小型、軽量に構成できるという優れた効果を奏する。   According to the rotating light unit of (1), since the blower fan is formed on the disk that supports the reflector, the blower fan is rotated in conjunction with the rotation of the disk, and the LED light source can be forcibly cooled by the wind from the blower fan. In addition, an excellent effect is achieved in that the drive unit dedicated to the fan is omitted, and the entire unit can be configured to be small and light.

上記（２）の回転灯ユニットによれば、光源ベースに風受け部を設けたので、光源ベースを大型化することなく、ＬＥＤ光源の発熱を効率よく放散させることができるという効果がある。   According to the rotating lamp unit of (2) above, since the wind receiver is provided on the light source base, there is an effect that the heat generated by the LED light source can be efficiently dissipated without increasing the size of the light source base.

上記（３）の回転灯ユニットによれば、送風ファンをＬＥＤ光源の側方に配置したので、送風ファンからの風でＬＥＤ光源を直接的に冷却でき、また、ＬＥＤ光源の位置を低くし、ユニットの全高を抑えることができるという効果がある。   According to the rotating light unit of (3) above, since the blower fan is arranged on the side of the LED light source, the LED light source can be directly cooled by the wind from the blower fan, and the position of the LED light source is lowered. There is an effect that the overall height of the unit can be suppressed.

上記（４）の回転灯ユニットによれば、送風ファンが固定軸の軸線方向から光源ベースに対向するので、送風ファンからの風を光源ベースに吹き付け、ＬＥＤ光源を間接的に冷却できるという効果がある。   According to the rotating light unit of (4) above, since the blower fan faces the light source base from the axial direction of the fixed shaft, the effect of being able to blow the wind from the blower fan to the light source base and indirectly cool the LED light source. is there.

上記（５）の回転灯ユニットによれば、風受け部の放熱フィンがＬＥＤ光源および光源ベースの熱を広い面積で効率よく放散させるという効果がある。   According to the rotating light unit of (5) above, there is an effect that the heat radiating fins of the wind receiving portion efficiently dissipate the heat of the LED light source and the light source base in a wide area.

本発明の一実施形態を示す車載警告灯の斜視図である。It is a perspective view of the vehicle-mounted warning light which shows one Embodiment of this invention. 図１の警告灯に設置された回転灯ユニットを示す斜視図である。It is a perspective view which shows the rotating light unit installed in the warning light of FIG. リフレクタを取り外した状態で図２の回転灯ユニットを示す平面図である。It is a top view which shows the rotary lamp unit of FIG. 2 in the state which removed the reflector. 回転灯ユニットの放熱構造を示す図３のＩＶ−ＩＶ線断面図である。It is the IV-IV sectional view taken on the line of FIG. 3 which shows the thermal radiation structure of a rotary lamp unit. 放熱構造の別の実施例を示す断面図である。It is sectional drawing which shows another Example of a thermal radiation structure. 図５の放熱構造の変更例を示す断面図である。It is sectional drawing which shows the example of a change of the thermal radiation structure of FIG.

以下、本発明の一実施形態を図面に基づいて説明する。この実施形態では、図１に示すように、緊急車両の屋根に搭載される車載警告灯１の内部に回転灯ユニット７が設置されている。車載警告灯１のグローブ２は、下部カバー３、スピーカカバー４、灯具カバー５から構成され、全体が透明となっている。グローブ２の中央部にはスピーカ６が配置され、スピーカ６の左右両側にそれぞれ２台の回転灯ユニット７が設置されている。回転灯ユニット７のシャーシ９は下部カバー３に取り付けられ、２台の回転灯ユニット７の間に反射板８が設けられている。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, as shown in FIG. 1, a rotating lamp unit 7 is installed inside an in-vehicle warning lamp 1 mounted on the roof of an emergency vehicle. The globe 2 of the in-vehicle warning lamp 1 includes a lower cover 3, a speaker cover 4, and a lamp cover 5, and is entirely transparent. A speaker 6 is disposed at the center of the globe 2, and two rotating lamp units 7 are installed on the left and right sides of the speaker 6. A chassis 9 of the rotating lamp unit 7 is attached to the lower cover 3, and a reflecting plate 8 is provided between the two rotating lamp units 7.

図２、図３に示すように、回転灯ユニット７は、シャーシ９の上側にディスク１３を備え、シャーシ９の片側にディスク１３を回転する駆動機構１４を装備している。ディスク１３の内側には光源ベース１０が配置され、光源ベース１０の上にＬＥＤ光源１１の基板２２が保持されている。ディスク１３の上面には、ＬＥＤ光源１１からの光を反射するリフレクタ１２が支持され、ディスク１３と一体に駆動機構１４のモーター１５によって回転され、ＬＥＤ光源１１がリフレクタ１２の回転と同期して点滅動作を行う。モーター１５はブラケット１７でシャーシ９に取り付けられ、モーター軸１５ａ上のピニオン１６がディスク１３の側面に形成されたギア１３ａに噛み合わされている。   As shown in FIGS. 2 and 3, the rotary lamp unit 7 includes a disk 13 on the upper side of the chassis 9 and a drive mechanism 14 that rotates the disk 13 on one side of the chassis 9. A light source base 10 is disposed inside the disk 13, and a substrate 22 of the LED light source 11 is held on the light source base 10. A reflector 12 that reflects light from the LED light source 11 is supported on the upper surface of the disk 13, and is rotated by the motor 15 of the drive mechanism 14 integrally with the disk 13. The LED light source 11 blinks in synchronization with the rotation of the reflector 12. Perform the action. The motor 15 is attached to the chassis 9 with a bracket 17, and a pinion 16 on the motor shaft 15 a is engaged with a gear 13 a formed on the side surface of the disk 13.

図４に示すように、光源ベース１０は固定軸２０の上端に水平に設けられ、固定軸２０がシャーシ９の軸受部２６にナット２１で垂直に固定されている。光源ベース１０の上面にはＬＥＤ光源１１の基板２２が接合し、ネジ２３で取り付けられ、ＬＥＤ光源１１が固定軸２０の軸線（Ａ）上に保持されている。基板２２の反対側において、光源ベース１０の下面には複数枚の放熱フィン２４が垂設され、放熱フィン２４によって送風ファン１８から風（Ｗ）を受ける風受け部２５が構成されている。なお、この実施形態では、光源ベース１０、固定軸２０、放熱フィン２４がアルミニウム材で一体に成形されている。   As shown in FIG. 4, the light source base 10 is horizontally provided at the upper end of the fixed shaft 20, and the fixed shaft 20 is fixed vertically to the bearing portion 26 of the chassis 9 with a nut 21. A substrate 22 of the LED light source 11 is joined to the upper surface of the light source base 10 and attached with screws 23, and the LED light source 11 is held on the axis (A) of the fixed shaft 20. On the opposite side of the substrate 22, a plurality of heat radiating fins 24 are suspended from the lower surface of the light source base 10, and a wind receiving portion 25 that receives wind (W) from the blower fan 18 is configured by the heat radiating fins 24. In this embodiment, the light source base 10, the fixed shaft 20, and the heat radiating fins 24 are integrally formed of an aluminum material.

送風ファン１８は、ＬＥＤ光源１１を側方から囲繞するように、ディスク１３の内側筒状部２８に一体形成されている。内側筒状部２８は、シャーシ９の軸受部２６と同心のリム部２７にベアリング１９を介して回転可能に支持され、ベアリング１９より上側に送風ファン１８の羽根１８ａが円環状に配列されている（図３参照）。そして、駆動機構１４がリフレクタ１２、ディスク１３および送風ファン１８を固定軸２０の軸線（Ａ）の周りで一体に回転し、羽根１８ａがディスク１３の下側から取り込んだ風（Ｗ）をＬＥＤ光源１１と放熱フィン２４に吹き付けるようになっている。   The blower fan 18 is integrally formed with the inner cylindrical portion 28 of the disk 13 so as to surround the LED light source 11 from the side. The inner cylindrical portion 28 is rotatably supported by a rim portion 27 concentric with the bearing portion 26 of the chassis 9 via a bearing 19, and the blades 18 a of the blower fan 18 are arranged in an annular shape above the bearing 19. (See FIG. 3). Then, the drive mechanism 14 integrally rotates the reflector 12, the disk 13 and the blower fan 18 around the axis (A) of the fixed shaft 20, and the wind (W) taken in from the lower side of the disk 13 by the blade 18a is the LED light source. 11 and the radiating fin 24 are sprayed.

この実施形態の回転灯ユニット７は、上記構成の放熱構造を装備しているので、次のような作用効果が得られる。
（ａ）送風ファン１８からの風（Ｗ）でＬＥＤ光源１１と放熱フィン２４を強制冷却でき、あわせて、ディスク１３の下側を通過する一部の風でモーター１５も冷却できる。
（ｂ）送風ファン１８をＬＥＤ光源１１の側方に配置したので、光源１１と基板２２を直接的に冷却し、基板２２上の部品に熱損を与えることなく、ＬＥＤ光源１１に比較的大きな電流を供給することができる。 Since the rotating lamp unit 7 of this embodiment is equipped with the heat dissipation structure having the above-described configuration, the following effects can be obtained.
(A) The LED light source 11 and the radiation fins 24 can be forcibly cooled by the wind (W) from the blower fan 18, and the motor 15 can also be cooled by a part of the wind passing under the disk 13.
(B) Since the blower fan 18 is arranged on the side of the LED light source 11, the light source 11 and the substrate 22 are directly cooled, and the components on the substrate 22 are relatively large without causing heat loss. A current can be supplied.

（ｃ）ＬＥＤ光源１１の発熱が光源ベース１０を伝って放熱フィン２４から効率よく放散するので、光源ベース１０を小さな面積で小型に形成できる。
（ｄ）光源ベース１０を送風ファン１８の内側に配置し、ＬＥＤ光源１１の位置を低くして、回転灯ユニット７の全高を抑えることができる。
（ｅ）送風ファン１８がリフレクタ１２を回転させる既設のモーター１５で回転されるので、ファン専用の駆動源を省いて、回転灯ユニット７を小型、軽量に構成できる。 (C) Since the heat generated by the LED light source 11 travels through the light source base 10 and is efficiently dissipated from the radiation fins 24, the light source base 10 can be formed in a small area and in a small size.
(D) The light source base 10 is disposed inside the blower fan 18, and the position of the LED light source 11 can be lowered to suppress the total height of the rotating lamp unit 7.
(E) Since the blower fan 18 is rotated by the existing motor 15 that rotates the reflector 12, the rotating lamp unit 7 can be configured to be small and lightweight by omitting a drive source dedicated to the fan.

図５に示す放熱構造では、送風ファン３１が光源ベース１０の下側において、ディスク１３の内側筒状部２８に一体形成され、固定軸２０の軸線（Ａ）方向から光源ベース１０と対向している。そして、ディスク１３の回転に伴い、送風ファン３１の羽根３１ａがシャーシ９の通風孔３２から取り込んだ風（Ｗ）を放熱フィン２４と光源ベース１０の下面に吹き付け、ＬＥＤ光源１１とその基板２２を間接的に冷却できるようになっている。なお、送風ファン３１を光源ベース１０の下側に配置したことで、ＬＥＤ光源１１の位置が図４に示す放熱構造と比較して若干高くなっている。   In the heat dissipation structure shown in FIG. 5, the blower fan 31 is integrally formed on the inner cylindrical portion 28 of the disk 13 below the light source base 10 and faces the light source base 10 from the axis (A) direction of the fixed shaft 20. Yes. As the disk 13 rotates, the blade (31a) of the blower fan 31 blows wind (W) taken from the ventilation holes 32 of the chassis 9 onto the lower surfaces of the heat radiation fins 24 and the light source base 10, and the LED light source 11 and its substrate 22 are blown. It can cool indirectly. In addition, by arrange | positioning the ventilation fan 31 under the light source base 10, the position of the LED light source 11 is a little high compared with the thermal radiation structure shown in FIG.

本発明は、上記実施形態に限定されるものではなく、以下に例示するように、発明の趣旨を逸脱しない範囲で、回転灯ユニット７の各部の構成や用途を適宜に変更して実施することも可能である。
（Ａ）図６に示すように、送風ファン３１を光源ベース１０の下側に配置した放熱構造において、放熱フィンを省略し、送風ファン３１からの風（Ｗ）を光源ベース１０の下面である風受け面３４に吹き付け、ＬＥＤ光源１１と基板２２を間接的に冷却すること。こうすれば、ＬＥＤ光源１１の位置を低くし、回転灯ユニット７の全高を抑えることができる。 The present invention is not limited to the above-described embodiment, and as illustrated below, the configuration and application of each part of the rotating lamp unit 7 may be changed as appropriate without departing from the spirit of the invention. Is also possible.
(A) As shown in FIG. 6, in the heat dissipation structure in which the blower fan 31 is disposed below the light source base 10, the heat dissipating fins are omitted, and the wind (W) from the blower fan 31 is on the lower surface of the light source base 10. It blows on the wind receiving surface 34 to cool the LED light source 11 and the substrate 22 indirectly. If it carries out like this, the position of the LED light source 11 can be made low and the total height of the rotary lamp unit 7 can be suppressed.

（Ｂ）図４に示す放熱構造において、放熱フィンを省略し、代わりに、光源ベース１０の周縁に下向きの円筒壁を形成し、この円筒壁を送風ファン１８からの風（Ｗ）を受ける風受け部として機能させること。
（Ｃ）上記実施形態の放熱構造を図１に示す車載警告灯１以外の回転灯ユニット、例えば、工事車両用の警光灯、生産ライン用の標識灯、商業設備用の広告灯などに適用すること。 (B) In the heat dissipating structure shown in FIG. 4, the heat dissipating fins are omitted, and instead, a downward cylindrical wall is formed on the periphery of the light source base 10, and this cylindrical wall receives wind (W) from the blower fan 18. To function as a receiving part.
(C) The heat dissipation structure of the above embodiment is applied to a rotating lamp unit other than the in-vehicle warning light 1 shown in FIG. 1, for example, a warning light for construction vehicles, a marker light for a production line, an advertising light for commercial facilities, etc. To do.

１ 車載警告灯
７ 回転灯ユニット
９ シャーシ
１０ 光源ベース
１１ ＬＥＤ光源
１２ リフレクタ
１３ ディスク
１４ 駆動機構
１８ 送風ファン
２０ 固定軸
２２ 基板
２４ 放熱フィン
２５ 風受け部
３１ 送風ファン
３４ 風受け面 DESCRIPTION OF SYMBOLS 1 Vehicle warning light 7 Revolving light unit 9 Chassis 10 Light source base 11 LED light source 12 Reflector 13 Disk 14 Drive mechanism 18 Blower fan 20 Fixed shaft 22 Substrate 24 Radiation fin 25 Wind receiving part 31 Blower fan 34 Wind receiving surface

Claims (5)

シャーシに固定された固定軸と、固定軸に保持されたＬＥＤ光源と、ＬＥＤ光源からの光を反射するリフレクタと、リフレクタを支持するディスクと、ディスクを固定軸の周りで回転する駆動機構とを備え、前記ディスクにＬＥＤ光源を冷却する送風ファンを形成したことを特徴とする回転灯ユニット。   A fixed shaft fixed to the chassis, an LED light source held on the fixed shaft, a reflector that reflects light from the LED light source, a disk that supports the reflector, and a drive mechanism that rotates the disk around the fixed shaft A rotating lamp unit comprising a disk and a blower fan for cooling the LED light source. 前記固定軸に金属製の光源ベースを設け、光源ベースにＬＥＤ光源の基板を接合し、基板と反対側の光源ベースに送風ファンからの風を受ける風受け部を形成した請求項１記載の回転灯ユニット。   The rotation according to claim 1, wherein a metal light source base is provided on the fixed shaft, an LED light source substrate is joined to the light source base, and an air receiving portion for receiving wind from the blower fan is formed on the light source base opposite to the substrate. Light unit. 前記送風ファンをＬＥＤ光源の側方に位置するようにディスクに形成した請求項２記載の回転灯ユニット。   The rotating lamp unit according to claim 2, wherein the blower fan is formed on a disk so as to be positioned on the side of the LED light source. 前記送風ファンを固定軸の軸線方向から光源ベースと対向するようにディスクに形成した請求項２記載の回転灯ユニット。   The rotating lamp unit according to claim 2, wherein the blower fan is formed on a disk so as to face the light source base from the axial direction of the fixed shaft. 前記風受け部が複数の放熱フィンを含む請求項２〜４の何れか一項に記載の回転灯ユニット。   The rotating lamp unit according to any one of claims 2 to 4, wherein the wind receiving portion includes a plurality of heat radiation fins.
JP2009127996A 2009-05-27 2009-05-27 Rotating light with blower fan Expired - Fee Related JP5586875B2 (en)

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