JP5297332B2 - LED lighting device - Google Patents

LED lighting device Download PDF

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JP5297332B2
JP5297332B2 JP2009242127A JP2009242127A JP5297332B2 JP 5297332 B2 JP5297332 B2 JP 5297332B2 JP 2009242127 A JP2009242127 A JP 2009242127A JP 2009242127 A JP2009242127 A JP 2009242127A JP 5297332 B2 JP5297332 B2 JP 5297332B2
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幹 高瀬
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シャープ株式会社
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本発明は、照明装置に関し、特に、LED光源を備え、光の照射する範囲を調整することのできるLED照明装置に関する。   The present invention relates to an illuminating device, and more particularly, to an LED illuminating device including an LED light source and capable of adjusting a light irradiation range.
近年の環境への意識の高まりの中、従来用いられてきた白熱電球のような消費電力の高い照明用光源は敬遠される動きになっており、白熱電球の置換えとしてLED(Light Emitting Diode:発光ダイオード)が用いられる事例が多くなっている。LEDは発光効率に優れ、蛍光灯のように水銀を使用していないことから環境にやさしい光源として注目されている。   In recent years, with the growing awareness of the environment, lighting power sources with high power consumption, such as incandescent light bulbs that have been used in the past, have been avoided, and as a replacement for incandescent light bulbs, LEDs (Light Emitting Diodes) In many cases, diodes are used. The LED is attracting attention as an environmentally friendly light source because it is excellent in luminous efficiency and does not use mercury like a fluorescent lamp.
特開2005−142005号公報JP-A-2005-142005
LEDは点光源であり、指向性が高い光源であり、前方に強い光を発するといった特長を持っている。   The LED is a point light source, is a light source with high directivity, and has a feature of emitting strong light forward.
現在、照明器具はいろいろな箇所に使用されているが、その使用状況を考えると、天井に取り付けるようなダウンライトなどの照明は、主に直下を照らす必要がある一方で、浴室や玄関などに用いる壁に取り付ける照明は、全周を照らす必要があり、使用箇所により必要とされる配光範囲は異なっている。   Currently, lighting fixtures are used in various places, but considering their usage, lighting such as downlights that are attached to the ceiling need to illuminate directly underneath, while bathrooms and entrances are used. The illumination attached to the wall to be used needs to illuminate the entire circumference, and the required light distribution range differs depending on the place of use.
白熱電球のような全方位に渡って発光する照明の場合は、配光範囲が広く、ほぼ全域にわたって光を照射することができるが、ダウンライトなどのような前方のみに光を照射する照明の場合は、後方への光の照射が無駄にならないよう反射板を設ける必要がある。   In the case of lighting that emits light in all directions, such as incandescent light bulbs, the light distribution range is wide and light can be emitted over almost the entire area. In such a case, it is necessary to provide a reflector so that the rearward light irradiation is not wasted.
一方、LEDのような前方にしか発光しない光源を有した照明器具は、指向性が強く、グレアが発生するため、全方位に渡って均一な光が照射されるように、光拡散性の高い樹脂やガラスを光学カバーとして用いることが多い。   On the other hand, a luminaire having a light source that emits light only in front, such as an LED, has high directivity and glare, so that it has high light diffusibility so that uniform light is emitted in all directions. Resin or glass is often used as an optical cover.
現在では、一つの光源のみでは、種々の使用箇所に適した配光に対応できないため、複数の光源、反射板、或いは拡散版を組み合わせる等の方法で、使用箇所に応じた配光範囲を照明器具全体で実現するように構成されている。   Currently, only one light source cannot handle the light distribution suitable for various places of use, so the light distribution range according to the place of use can be illuminated by combining multiple light sources, reflectors, or diffused plates. It is comprised so that it may implement | achieve with the whole instrument.
配光を制御する手段として、例えば、特許文献1に開示されている照明装置(スポットライト光発生装置)では、LEDから照射された光を集光装置を通すことで光の広がりを制御しているが、LEDから発せられる光を狭める方向にしか制御することができない。また、LEDからの光は前方にしか光が発せられないため、LEDを平面状に配置する特許文献1の照明装置では横方向や後方に光を配光することができない。   As a means for controlling the light distribution, for example, in the lighting device (spotlight light generating device) disclosed in Patent Document 1, the spread of light is controlled by passing the light emitted from the LED through the condensing device. However, it can be controlled only in the direction of narrowing the light emitted from the LED. Further, since the light from the LED can only be emitted forward, the illumination device of Patent Document 1 in which the LEDs are arranged in a plane cannot distribute light laterally or backward.
本発明は上記従来技術に係る問題点を鑑みてなされたものであり、使用箇所に応じて容易に配光を制御することが可能なLED照明装置を提供することを目的とする。   The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide an LED lighting device capable of easily controlling light distribution in accordance with the place of use.
上記目的を達成するための本発明に係るLED照明装置は、LEDチップがパッケージに実装されたLED光源と、前記LED光源を主面上において支持する基台と、前記基台の前記主面側に設置される、前記LED光源を覆う透光性の光学カバーと、を備え、前記光学カバーは、外周部と、前記外周部と接続する頂上部からなり、前記光学カバーの前記外周部及び前記頂上部が、光拡散性を有し、前記主面上に前記LED光源が支持される面からみた前記光学カバーの前記外周部の相対的な高さを、使用状態において前記基台に前記光学カバーと前記LED光源が支持された状態で固定し、且つ、その使用状態における高さを調整する機構を備えることを第1の特徴とする。
更に、本発明に係るLED照明装置は、上記第1の特徴に加えて、前記光学カバーの前記外周部の相対的な高さが高いほど配光範囲が広がり、低いほど配光範囲が狭くなることを第2の特徴とする。
In order to achieve the above object, an LED lighting device according to the present invention includes an LED light source in which an LED chip is mounted in a package, a base that supports the LED light source on a main surface, and the main surface side of the base A translucent optical cover that covers the LED light source, and the optical cover includes an outer peripheral portion and a top connected to the outer peripheral portion, and the outer peripheral portion of the optical cover and the optical cover. The top portion has light diffusibility, and the relative height of the outer peripheral portion of the optical cover as viewed from the surface on which the LED light source is supported on the main surface is set to the optical base in the use state. A first feature is that a cover and the LED light source are fixed in a supported state, and a mechanism for adjusting the height in the use state is provided.
Furthermore, in addition to the first feature, the LED lighting device according to the present invention has a wider light distribution range as the relative height of the outer peripheral portion of the optical cover is higher, and a light distribution range is narrower as the lower is lower. This is the second feature.
更に、本発明に係るLED照明装置は、上記第1又は第2の特徴に加えて、前記光学カバーの被支持部を、前記LED光源が支持される面と垂直な方向に出退させる機構を備えることを第の特徴とする。 Furthermore, in addition to the first or second feature, the LED lighting device according to the present invention has a mechanism for moving the supported portion of the optical cover in a direction perpendicular to the surface on which the LED light source is supported. The third feature is to provide.
更に、本発明に係るLED照明装置は、上記第の特徴に加えて、前記光学カバーの円筒状の前記被支持部に、ねじ山とねじ溝が形成され、前記光学カバーを回転させることで、前記光学カバーの前記被支持部と前記基台が螺合し、前記主面上に前記LED光源が支持される面からみた前記光学カバーの前記外周部の相対的な高さが調整されることを第の特徴とする。
Furthermore, in addition to the third feature, the LED lighting device according to the present invention has a thread and a groove formed in the cylindrical supported portion of the optical cover, and the optical cover is rotated. The supported portion of the optical cover and the base are screwed together, and the relative height of the outer peripheral portion of the optical cover as viewed from the surface on which the LED light source is supported is adjusted on the main surface. This is the fourth feature.
また、本発明に係るLED照明装置は、上記第1乃至第4の何れかの特徴に加えて、前記主面の前記LED光源が支持される位置を、前記LED光源が支持される面と垂直な方向に上下させる機構を備えることを第5の特徴とする。   Further, in addition to any of the first to fourth features, the LED lighting device according to the present invention has a position where the LED light source of the main surface is supported perpendicular to the surface where the LED light source is supported. It is a fifth feature that a mechanism for moving up and down in any direction is provided.
また、本発明に係るLED照明装置は、上記第1乃至第5の何れかの特徴に加えて、前記光学カバーの前記外周部は、円筒状であり、前記光学カバーの前記頂上部は、LED光源の出射方向に突出した球面状であることを第6の特徴とする。   Moreover, in addition to any of the first to fifth features, the LED illumination device according to the present invention is configured such that the outer peripheral portion of the optical cover is cylindrical, and the top portion of the optical cover is an LED. A sixth feature is that the light source has a spherical shape protruding in the emission direction of the light source.
また、本発明に係るLED照明装置は、上記第1乃至第6の何れかの特徴に加えて、前記主面上に前記LED光源が支持される面からみた前記光学カバーの前記外周部の相対的な高さをリモコンで制御可能に構成されていることを第7の特徴とする。
Further, in addition to any one of the first to sixth features, the LED lighting device according to the present invention has a relative relationship between the outer peripheral portion of the optical cover as viewed from a surface on which the LED light source is supported on the main surface. The seventh feature is that the height can be controlled by a remote controller.
また、本発明に係るLED照明装置は、電球型のLED照明装置であって、上記第1乃至第7の何れかの特徴に加えて、前記基台の前記主面と反対側に、電球ソケットに螺合し、交流電力を供給する口金を備え、前記基台の内部に、前記交流電力を直流電力に変換し、前記LEDチップに電力を供給するための電源回路を備えることを第8の特徴とする。   Moreover, the LED lighting device according to the present invention is a light bulb type LED lighting device, and in addition to any of the first to seventh features, a light bulb socket is provided on a side opposite to the main surface of the base. And a base for supplying AC power, and an internal power supply circuit for converting the AC power into DC power and supplying power to the LED chip. Features.
本発明に依れば、基台の主面上にLED光源が支持される面からみた光学カバーの相対的な高さを調整できる機構を設けることにより、上記従来技術に係る問題点が解決され、使用箇所に応じて容易に配光を制御することが可能なLED照明装置を提供することができる。以下に、その理由について、詳細に説明する。   According to the present invention, by providing a mechanism capable of adjusting the relative height of the optical cover as viewed from the surface on which the LED light source is supported on the main surface of the base, the above-described problems related to the prior art are solved. It is possible to provide an LED lighting device capable of easily controlling the light distribution according to the use location. The reason will be described in detail below.
以下に示すように、LED光源による配光範囲は光学カバーの形状に依存する割合が高く、特に縦横のサイズの比が影響する。   As shown below, the light distribution range by the LED light source is highly dependent on the shape of the optical cover, and is particularly affected by the ratio of the vertical and horizontal sizes.
光学カバーとして拡散性の高い材料を使用した場合の光の透過の様子を図1に示す。拡散性が低い素材では、入射した光の角度と平行に光は出射する。一方、拡散性の高い素材1に背面から光を入射した場合、図1に示されるように、当該素材1上で入射光2はランバート散乱し、広範囲の角度に散乱光3が出射されることになる。この特性を利用し、円筒状の外周部16と半球状の頂上部17からなる光学カバー15を作成した場合のLED光源14からの光の広がり方を図2に示す。   FIG. 1 shows the state of light transmission when a highly diffusive material is used as the optical cover. For materials with low diffusivity, light is emitted parallel to the angle of the incident light. On the other hand, when light is incident on the material 1 having high diffusibility from the back, the incident light 2 is Lambert scattered on the material 1 and the scattered light 3 is emitted at a wide range of angles as shown in FIG. become. FIG. 2 shows how the light from the LED light source 14 spreads when an optical cover 15 including a cylindrical outer peripheral portion 16 and a hemispherical apex 17 is formed using this characteristic.
図2より、外周部16に当たった光は、光学カバー外周部の法線方向を中心としてランバート散乱する。このため、横方向の光が強くなる。   As shown in FIG. 2, the light hitting the outer peripheral portion 16 is Lambert scattered about the normal direction of the outer peripheral portion of the optical cover. For this reason, the light of a horizontal direction becomes strong.
一方、天井方向、特にLED光源14の真上に位置する頂上部に当たった光は、LED光源の出射方向(LED光源の支持面に垂直な方向)を中心としてランバート散乱することになる。   On the other hand, light that hits the ceiling direction, particularly the top located directly above the LED light source 14, is Lambert scattered around the emission direction of the LED light source (direction perpendicular to the support surface of the LED light source).
このため、LED光源14からの光が外周部16に当たる量が多いほど、LED光源の出射方向に対して横方向、或いは後ろ方向に配光される光量が多くなる。逆に、LED光源14からの光が外周部16に当たる量が少ないほど、LED光源の出射方向に配光される光量が多くなる。従って、外周部の高さを調整することで、配光を制御することが可能になる。   For this reason, the greater the amount of light from the LED light source 14 that strikes the outer peripheral portion 16, the greater the amount of light distributed in the lateral direction or backward direction with respect to the emission direction of the LED light source. Conversely, the smaller the amount of light from the LED light source 14 that strikes the outer peripheral portion 16, the greater the amount of light distributed in the emission direction of the LED light source. Therefore, the light distribution can be controlled by adjusting the height of the outer peripheral portion.
円筒状の外周部と半球状の頂上部からなる光学カバーにおいて、外周部の円筒の高さを変えた場合の配光範囲を光学シミュレーションツール(例えば、Optical Research Associates社のLightTools)にてシミュレーションした結果を図3に示す。図3は円筒の内径を60mm、半球の内径を60mmとして、光学カバーの材料として入射した光の99%が拡散する特性を持つ材料、即ち曇度(HAZE)が99%の材料を使用した場合のシミュレーション結果であり、LED光源の出射方向に対する照射光のなす角度毎に輝度分布を求め、最大輝度に対して50%を超える角度範囲を配光範囲としている。   In an optical cover consisting of a cylindrical outer periphery and a hemispherical top, the light distribution range when the height of the outer peripheral cylinder was changed was simulated with an optical simulation tool (for example, Optical Tools of Optical Research Associates). The results are shown in FIG. FIG. 3 shows a case where the inner diameter of the cylinder is 60 mm, the inner diameter of the hemisphere is 60 mm, and a material having 99% of the incident light diffuses as the material of the optical cover, that is, a material having a haze (HAZE) of 99%. The luminance distribution is obtained for each angle formed by the irradiation light with respect to the emission direction of the LED light source, and the angle range exceeding 50% with respect to the maximum luminance is set as the light distribution range.
上記の結果から、LED光源が支持される面からみた光学カバーの高さを調整することにより、配光範囲を制御することができ、利用場所だけでなく利用シーンに合った配光を得ることができることが分かる。   From the above results, it is possible to control the light distribution range by adjusting the height of the optical cover as viewed from the surface on which the LED light source is supported, and obtain a light distribution suitable for the usage scene as well as the usage location. You can see that
ここで、当該光学カバーの高さを調整する方法としては、(1)ネジ式の回転機構を設ける等、当該光学カバーの一部をLED光源の支持面と垂直な方向に出退させるか、(2)LED光源が支持される位置を、LED光源の支持面と垂直な方向に上下させることで、LED光源が支持される面からみた光学カバーの相対的な高さを調整する方法、或いは、(3)光学カバーの高さを変更可能に構成する方法、の3通りが挙げられる。   Here, as a method of adjusting the height of the optical cover, (1) a part of the optical cover is moved in a direction perpendicular to the support surface of the LED light source, such as providing a screw type rotation mechanism, (2) A method of adjusting the relative height of the optical cover as viewed from the surface on which the LED light source is supported by moving the position at which the LED light source is supported in a direction perpendicular to the support surface of the LED light source, or (3) A method of configuring the height of the optical cover to be changeable.
上記(1)〜(3)のうち少なくとも何れか一つを実現する機構を備えることにより、LED光源が支持される位置からみた光学カバーの相対的な高さを調整でき、使用箇所に応じて容易に配光を制御することが可能なLED照明装置を提供することができる。   By providing a mechanism that realizes at least one of the above (1) to (3), the relative height of the optical cover as viewed from the position where the LED light source is supported can be adjusted, depending on the location of use. It is possible to provide an LED lighting device that can easily control light distribution.
更に、本発明の第7の特徴のLED照明装置に依れば、当該LED光源が支持される面からみた光学カバーの相対的な高さを、照明装置の使用者が、利用シーンに必要とされる配光に応じてリモコンで変更することができる。   Further, according to the LED lighting device of the seventh feature of the present invention, the user of the lighting device needs to have the relative height of the optical cover viewed from the surface on which the LED light source is supported in the usage scene. It can be changed with the remote control according to the light distribution.
更に、本発明の第8の特徴のLED照明装置は、電球ソケットに螺合する口金を更に設けることで、既存の白熱電球を置き換えることのできるLED電球として利用可能となる。この結果、設置箇所に合わせて配光を制御可能な、小型のLED電球を提供することができる。   Furthermore, the LED lighting device according to the eighth feature of the present invention can be used as an LED bulb that can replace an existing incandescent bulb by further providing a base screwed into the bulb socket. As a result, it is possible to provide a small LED bulb capable of controlling the light distribution according to the installation location.
拡散性の高い材料に光を入射した場合の光の透過の様子を示す図。The figure which shows the mode of permeation | transmission of light when light injects into material with high diffusivity. 円筒状の外周部と半球状の頂上部からなる光学カバーにLEDからの光を入射した場合の光の広がり方を示す図。The figure which shows how the light spreads when the light from LED injects into the optical cover which consists of a cylindrical outer peripheral part and a hemispherical top part. 円筒状の外周部と半球状の頂上部からなる光学カバーにLEDからの光を入射した場合の、外周部の高さと配光範囲との関係を示す表。The table | surface which shows the relationship between the height of an outer peripheral part, and the light distribution range when the light from LED injects into the optical cover which consists of a cylindrical outer peripheral part and a hemispherical top. 本発明の第1実施形態に係るLED照明装置(LED電球)の構成例を示す図。The figure which shows the structural example of the LED lighting apparatus (LED light bulb) which concerns on 1st Embodiment of this invention. 第1実施形態に係るLED照明装置において、光学カバーの相対的な高さを変更した場合の光学カバー、基台、及びLED光源の位置関係を示す図。In the LED illuminating device which concerns on 1st Embodiment, the figure which shows the positional relationship of the optical cover at the time of changing the relative height of an optical cover, a base, and an LED light source. 本発明の第2実施形態に係るLED照明装置(LED電球)の構成例を示す図。The figure which shows the structural example of the LED lighting apparatus (LED light bulb) which concerns on 2nd Embodiment of this invention. 第2実施形態で用いられる光学カバーの断面図。Sectional drawing of the optical cover used in 2nd Embodiment. 第2実施形態で用いられる光学カバーの外周部の構造図。The structure figure of the outer peripheral part of the optical cover used in 2nd Embodiment. 第2実施形態に係るLED照明装置において、光学カバーの相対的な高さを変更した場合の光学カバー、基台、及びLED光源の位置関係を示す図。The figure which shows the positional relationship of the optical cover at the time of changing the relative height of an optical cover, a base, and an LED light source in the LED lighting apparatus which concerns on 2nd Embodiment. 本発明の第3実施形態に係るLED照明装置(LED電球)の構成例を示す図。The figure which shows the structural example of the LED lighting apparatus (LED light bulb) which concerns on 3rd Embodiment of this invention.
〈第1実施形態〉
本発明の一実施形態に係るLED照明装置10(以降、適宜「本発明装置10」と称す)の構成例を図4に示す。尚、図4に示されるLED照明装置10は、既存の電球ソケットに螺合する口金11を有し、取付け及び取外しが可能に構成されたLED電球であるが、本発明は必ずしもこの構成に限られるものではない。また、以降に示される図面では適宜、要部を強調して示すこととし、各図中に示される各構成要素の寸法比と実際の寸法比とは必ずしも一致しない。
<First Embodiment>
FIG. 4 shows a configuration example of the LED lighting device 10 according to an embodiment of the present invention (hereinafter referred to as “the present device 10” as appropriate). The LED lighting device 10 shown in FIG. 4 is an LED bulb that has a base 11 that is screwed into an existing bulb socket and can be attached and detached. However, the present invention is not limited to this configuration. It is not something that can be done. In the drawings shown below, important parts are appropriately emphasized, and the dimensional ratios of the components shown in the drawings do not necessarily match the actual dimensional ratios.
基台12の主面13上であって、中央部に、LEDチップをパッケージに実装したLED光源14が支持され、設置されている。基台12は、LED光源14の発光により生じた熱を外部に放熱する役割を有している。また、基台12は、図示しないが、口金11から供給される交流電源を直流電源に変換し、LEDチップに電力を供給するための電源回路をその内部に備えている。また、LED光源14を覆う透光性の光学カバー15が、基台12の主面側に設置されている。光学カバー15は、光拡散性に優れる材料で構成することが望ましく、曇度が99%以上の材料を用いることがより望ましい。ここでは、光拡散性に優れるポリカーボネートを光学カバー15の材料として用いている。光学カバー15は、円筒状の外周部16と、球面状の頂上部17を組み合わせたキャップ状の形状となっている。   On the main surface 13 of the base 12, an LED light source 14 in which an LED chip is mounted in a package is supported and installed at the center. The base 12 has a role of radiating heat generated by the light emission of the LED light source 14 to the outside. Moreover, although not shown in figure, the base 12 equips the inside with the power supply circuit for converting the alternating current power supplied from the nozzle | cap | die 11 into direct current power, and supplying electric power to a LED chip. A translucent optical cover 15 that covers the LED light source 14 is installed on the main surface side of the base 12. The optical cover 15 is preferably made of a material having excellent light diffusibility, and more preferably a material having a haze of 99% or more. Here, polycarbonate having excellent light diffusibility is used as the material of the optical cover 15. The optical cover 15 has a cap shape in which a cylindrical outer peripheral portion 16 and a spherical top portion 17 are combined.
尚、光学カバー15は曇度の大きな材料で構成されるため、実際には、LED光源14は光学カバー15に隠れて見えないが、図4では説明の都合上透明であるとして示している。   Since the optical cover 15 is made of a material with a high haze, the LED light source 14 is actually hidden behind the optical cover 15 but is shown as transparent in FIG. 4 for convenience of explanation.
基台12のLED光源14の支持部分より下側、及び、透光性の光学カバーの外周部16の内壁にはねじ山とねじ谷が設けられ、光学カバー15を回転させることでLED光源14が支持される面からみた光学カバーの相対的な高さが調整できるようになっている。光学カバー外周部16の下端部には、光学カバー15を回しすぎて外れないようにするための抜け防止ツメ18が複数設けられている。   A screw thread and a thread valley are provided below the supporting portion of the base 12 on the LED light source 14 and on the inner wall of the outer peripheral portion 16 of the translucent optical cover, and the LED light source 14 is rotated by rotating the optical cover 15. The relative height of the optical cover as viewed from the surface on which it is supported can be adjusted. At the lower end of the optical cover outer peripheral portion 16, a plurality of removal prevention claws 18 are provided to prevent the optical cover 15 from being turned too much.
更に、光学カバーの外周部16の内壁には、光学カバーの相対的な高さを所定の高さに固定するためのツメ19aが、円筒の軸方向に所定の間隔で複数設けられ、基台12のLED光源14の支持部分より下側に設けられている窪み19bと会合することで、基台12に光学カバー15が支持された状態で、光学カバー15のLED光源14が支持される面からみた高さが固定され、且つ、その高さが所定の間隔毎に調整可能になっている。   Further, a plurality of claws 19a for fixing the relative height of the optical cover to a predetermined height are provided on the inner wall of the outer peripheral portion 16 of the optical cover at predetermined intervals in the axial direction of the cylinder. The surface of the optical cover 15 on which the LED light source 14 is supported in a state where the optical cover 15 is supported on the base 12 by associating with the depression 19b provided below the supporting portion of the 12 LED light sources 14 The tangled height is fixed, and the height can be adjusted at predetermined intervals.
図5に光学カバー15を回転させ、光学カバー15の相対的な高さを変更した場合の光学カバー15と基台12とLED光源14の位置関係を示す。図5では、LED光源14が支持される面41の位置を点線で示している。図5(a)は中間の高さであり、光学カバーを回転させ、ネジを緩めることで当該位置関係は図5(b)のように変化し、LED光源が支持される面41を基準とした光学カバー15の相対的な高さが高くなり、光学カバーの頂上部17がLED光源14から遠くなる。一方、ネジを締めることで当該位置関係は図5(c)のように変化し、LED光源が支持される面41を基準とした光学カバー15の相対的な高さが低くなり、頂上部17がLED光源14から近くなる。   FIG. 5 shows the positional relationship among the optical cover 15, the base 12, and the LED light source 14 when the optical cover 15 is rotated and the relative height of the optical cover 15 is changed. In FIG. 5, the position of the surface 41 on which the LED light source 14 is supported is indicated by a dotted line. FIG. 5A shows an intermediate height. By rotating the optical cover and loosening the screws, the positional relationship changes as shown in FIG. 5B, and the surface 41 on which the LED light source is supported is used as a reference. The relative height of the optical cover 15 is increased, and the top 17 of the optical cover is moved away from the LED light source 14. On the other hand, by tightening the screw, the positional relationship changes as shown in FIG. 5C, the relative height of the optical cover 15 with respect to the surface 41 on which the LED light source is supported becomes lower, and the top 17 Becomes closer to the LED light source 14.
上記本発明装置10により、LED光源14が支持される面からみた光学カバーの相対的な高さを調整することができるので、利用箇所、利用シーンに併せて容易に配光範囲を変更することができる。   Since the relative height of the optical cover as viewed from the surface on which the LED light source 14 is supported can be adjusted by the device 10 of the present invention, the light distribution range can be easily changed according to the use location and the use scene. Can do.
〈第2実施形態〉
本発明の一実施形態に係るLED照明装置20(以降、適宜「本発明装置20」と称す)の構成例を図6に示す。上述の第1実施形態と同様、図6に示されるLED照明装置20は、既存の電球ソケットに螺合する口金11を有し、取付け及び取外しが可能に構成されたLED電球である。第1実施形態との相違点は、光学カバーの外周部16が、内径の異なる複数の円筒状の部分16a〜16cから構成されており、結果、外周部全体の高さが調整可能になっている点である。尚、光学カバーは曇度の大きな材料で構成されるため、実際には基台12上に支持されているLED光源14は光学カバーに隠れて見えないが、図6では説明の都合上透明であるとして示している。
Second Embodiment
FIG. 6 shows a configuration example of an LED lighting device 20 according to an embodiment of the present invention (hereinafter referred to as “the present invention device 20” as appropriate). Similar to the first embodiment described above, the LED lighting device 20 shown in FIG. 6 is an LED bulb that has a base 11 that is screwed into an existing bulb socket, and that can be attached and detached. The difference from the first embodiment is that the outer peripheral portion 16 of the optical cover is composed of a plurality of cylindrical portions 16a to 16c having different inner diameters. As a result, the height of the entire outer peripheral portion can be adjusted. It is a point. In addition, since the optical cover is made of a material having a high haze, the LED light source 14 supported on the base 12 is actually hidden behind the optical cover, but is not transparent in FIG. Shown as being.
図7に光学カバー全体の断面形状を示す。光学カバー15は、第1実施形態と同様、円筒状の外周部16と、半球状の頂上部17からなる。ここで、外周部16は、互いに内接或いは外接する3つの円筒状の外周部分16a〜16cからなり、最も内径の小さな円筒19cは半球状の頂上部17と組み合わさることでキャップ状の形状となっている。   FIG. 7 shows a cross-sectional shape of the entire optical cover. As in the first embodiment, the optical cover 15 includes a cylindrical outer peripheral portion 16 and a hemispherical top portion 17. Here, the outer peripheral portion 16 is composed of three cylindrical outer peripheral portions 16a to 16c that are inscribed or circumscribed with each other, and the cylinder 19c having the smallest inner diameter is combined with a hemispherical top portion 17 to form a cap-like shape. It has become.
具体的に、外周部分16bの形状の断面形状の3面図を図8に示す。上面図を図8(a)に、正面図を図8(b)に、側面図を図8(c)に示す。他の外周部分16a、16cについても内径及び外径が異なるが同様の形状をしている。外周部分16bは、その内壁に複数のレール状の窪み(支持部)21が、高さ方向に所定の間隔で形成されており、外周部分16bに内接することのできる内側の外周部分(ここでは、16c)の下端に設けられているツメ(被支持部)22と会合することで、外周部分同士が支持される。また、円筒の軸方向に延伸する溝23が複数形成されており、内側の外周部分を回転させ、溝23の位置とツメ22の位置を一致させることで、当該内側の外周部分を円筒の軸方向に出退させることができ、これにより当該内側の外周部分を支持する窪み21の位置を変えることで光学カバーの外周部16全体としての高さが調整可能になっている。窪み21の位置を変更後、内側の外周部分を回転させ、溝23の位置とツメ22の位置をずらすことにより、外周部分同士の支持位置が円筒の軸方向において固定される。   Specifically, FIG. 8 shows a trihedral view of the cross-sectional shape of the outer peripheral portion 16b. A top view is shown in FIG. 8 (a), a front view is shown in FIG. 8 (b), and a side view is shown in FIG. 8 (c). The other outer peripheral portions 16a and 16c have the same shape although the inner diameter and the outer diameter are different. The outer peripheral portion 16b has a plurality of rail-shaped depressions (support portions) 21 formed on the inner wall at predetermined intervals in the height direction, and an inner outer peripheral portion (here, which can be inscribed in the outer peripheral portion 16b) , 16c), the outer peripheral portions are supported by associating with the claw (supported portion) 22 provided at the lower end. In addition, a plurality of grooves 23 extending in the axial direction of the cylinder are formed. By rotating the inner peripheral portion and aligning the position of the groove 23 with the position of the claw 22, the inner peripheral portion is aligned with the cylindrical shaft. The height of the outer peripheral portion 16 of the optical cover as a whole can be adjusted by changing the position of the recess 21 that supports the inner peripheral portion. After changing the position of the recess 21, the inner peripheral portion is rotated to shift the position of the groove 23 and the position of the claw 22, thereby fixing the support position between the outer peripheral portions in the axial direction of the cylinder.
図9に光学カバーの外周部の高さを変更した場合の光学カバーと基台との位置関係を示す。図9では、LED光源14が支持される面41の位置を点線で示している。図9(a)は光学カバーの外周部の高さが最も低い場合であり、内側の外周部分16bと16cは外周部分16aの内側に格納されている。内側の外周部分16bと16cを引き出すことで当該位置関係は図9(b)のように変化し、LED光源が支持される面41を基準とした光学カバーの相対的な高さが高くなり、頂上部17がLED光源から遠くなる。更に内側の外周部分16cを外周部分16bから引き出すことで当該位置関係は図9(c)のように変化し、LED光源が支持される面を基準とした光学カバーの相対的な高さを更に高くすることができる。   FIG. 9 shows the positional relationship between the optical cover and the base when the height of the outer peripheral portion of the optical cover is changed. In FIG. 9, the position of the surface 41 on which the LED light source 14 is supported is indicated by a dotted line. FIG. 9A shows a case where the height of the outer peripheral portion of the optical cover is the lowest, and the inner peripheral portions 16b and 16c are stored inside the outer peripheral portion 16a. By pulling out the inner peripheral portions 16b and 16c, the positional relationship changes as shown in FIG. 9B, and the relative height of the optical cover with respect to the surface 41 on which the LED light source is supported is increased. The top 17 is far from the LED light source. Further, by pulling out the inner outer peripheral portion 16c from the outer peripheral portion 16b, the positional relationship changes as shown in FIG. 9C, and the relative height of the optical cover with respect to the surface on which the LED light source is supported is further increased. Can be high.
このとき、光学カバーの外周部16の厚さは、図9(c)のようにその高さを高くすると薄くなり、図9(a)のように低くすると厚くなる。光学カバーの相対高さを低くすることに加えて、外周部の厚さが厚くなることで、光学カバー外周部による光の透過率が低下し、反射率が高くなるため、頂上部17に光がまわる割合が増加し、より配光範囲を狭くすることができる。   At this time, the thickness of the outer peripheral portion 16 of the optical cover becomes thinner when the height is increased as shown in FIG. 9C, and becomes thicker when the height is lowered as shown in FIG. 9A. In addition to lowering the relative height of the optical cover, increasing the thickness of the outer peripheral portion reduces the light transmittance by the outer peripheral portion of the optical cover and increases the reflectance. The ratio of turning is increased, and the light distribution range can be further narrowed.
上記本発明装置20によっても、LED光源が支持される面からみた光学カバーの相対的な高さを調整することができるので、利用箇所、利用シーンに併せて容易に配光範囲を変更することができる。   The present invention device 20 can also adjust the relative height of the optical cover as viewed from the surface on which the LED light source is supported, so that the light distribution range can be easily changed according to the use location and the use scene. Can do.
〈第3実施形態〉
本発明の一実施形態に係るLED照明装置30(以降、適宜「本発明装置30」と称す)の構成例を図10に示す。上述の第1及び第2実施形態と同様、図10に示されるLED照明装置30は、既存の電球ソケットに螺合する口金11を有し、取付け及び取外しが可能に構成されたLED電球である。第3実施形態では、基台12上にLED光源14が設置される位置が、LED光源14が設置される面と垂直な方向(上下方向)に移動可能であり、結果、LED光源が支持される面からみた光学カバー15の相対的な高さが調整される。尚、光学カバー15は曇度の大きな材料で構成されるため、実際には基台上に支持されているLED光源14は光学カバー15に隠れて見えないが、図10では説明の都合上透明であるとして示している。
<Third Embodiment>
FIG. 10 shows a configuration example of the LED lighting device 30 according to an embodiment of the present invention (hereinafter, referred to as “the present device 30” as appropriate). Similar to the first and second embodiments described above, the LED lighting device 30 shown in FIG. 10 is an LED light bulb that has a base 11 that is screwed into an existing light bulb socket, and that can be attached and detached. . In the third embodiment, the position where the LED light source 14 is installed on the base 12 can be moved in a direction (vertical direction) perpendicular to the surface where the LED light source 14 is installed, and as a result, the LED light source is supported. The relative height of the optical cover 15 viewed from the surface to be adjusted is adjusted. Since the optical cover 15 is made of a material having a high haze, the LED light source 14 supported on the base is actually hidden behind the optical cover 15, but is transparent for convenience of explanation in FIG. As shown.
更に、本発明装置30は、LED光源14が支持される面上に受信部31を有し、リモコンからの信号を受信することで、LED光源14の上下位置を自動で遠隔操作ができるようになっている。   Furthermore, the device 30 of the present invention has a receiving unit 31 on the surface on which the LED light source 14 is supported, so that the vertical position of the LED light source 14 can be remotely controlled automatically by receiving a signal from the remote controller. It has become.
基台12の内部に、LED光源14が支持される支持台32と螺合するねじ山およびねじ谷を有する回転軸33を有し、当該軸33をモーター34で回転させることでLED光源の支持台32の位置を上下方向に調整することができる。これによりLED光源の支持位置が上下方向で調整され、以てLED光源が支持される面からみた光学カバーの相対的な高さを調整することができる。   The base 12 has a rotating shaft 33 having a screw thread and a thread valley threadedly engaged with a support base 32 on which the LED light source 14 is supported, and the shaft 33 is rotated by a motor 34 to support the LED light source. The position of the table 32 can be adjusted in the vertical direction. Thereby, the support position of the LED light source is adjusted in the vertical direction, so that the relative height of the optical cover viewed from the surface on which the LED light source is supported can be adjusted.
上記本発明装置30によっても、LED光源が支持される面からみた光学カバーの相対的な高さを調整することができるので、利用箇所、利用シーンに併せて容易に配光範囲を変更することができる。   Since the relative height of the optical cover as viewed from the surface on which the LED light source is supported can also be adjusted by the present invention device 30, the light distribution range can be easily changed in accordance with the use location and the use scene. Can do.
上述の実施形態は本発明の好適な実施形態の一例である。本発明の実施形態はこれに限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々の変形実施が可能である。   The above-described embodiment is an example of a preferred embodiment of the present invention. The embodiment of the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention.
例えば、上記実施形態では、光学カバー15は、外周部16と頂上部17からなり、外周部の形状が円筒状で、頂上部の形状が半球状である場合について説明したが、本発明はこれに限られるものではなく、外周部或いは頂上部の形状に限定されない。上記第1実施形態では、光学カバー15の外周部16のうち、ネジ谷とネジ山が設けられている基台12との被支持部の形状については円筒状でなければならないが、他の高さ調節に関係しない外周部の形状については必ずしも円筒状である必要はない。特に、上記第1から第3実施形態のいずれにおいても、頂上部17の形状は球面状に限られず、任意のデザイン性を高めた形状とすることができる。   For example, in the above-described embodiment, the optical cover 15 includes the outer peripheral portion 16 and the top portion 17, and the outer peripheral portion has a cylindrical shape and the top portion has a hemispherical shape. However, the shape is not limited to the shape of the outer periphery or the top. In the first embodiment, the shape of the supported portion of the outer peripheral portion 16 of the optical cover 15 with respect to the base 12 on which the screw valley and the screw thread are provided must be cylindrical. The shape of the outer peripheral portion not related to the thickness adjustment is not necessarily cylindrical. In particular, in any of the first to third embodiments, the shape of the top portion 17 is not limited to a spherical shape, and can be a shape with an arbitrarily improved design.
本発明は、LED光源を照明に用いるLED照明装置に利用可能であり、特に、電球ソケットに螺合する口金を備えるLED電球に利用することができる。   INDUSTRIAL APPLICABILITY The present invention can be used for an LED lighting device that uses an LED light source for illumination, and in particular, can be used for an LED bulb including a base screwed into a bulb socket.
1: 拡散性の高い材料
2: 入射光
3: (ランバート散乱による)散乱光
10: 本発明の第1実施形態に係るLED照明装置(LED電球)
11: 口金
12: 基台
13: 主面
14: LED光源
15: 光学カバー
16: 光学カバーの外周部
17: 光学カバーの頂上部
18: 抜け防止用ツメ
19a: 高さ固定用ツメ
19b: 高さ固定用の窪み
20: 本発明の第2実施形態に係るLED照明装置(LED電球)
21: 光学カバーの支持部(支持部)
22: 光学カバーの被支持部(ツメ)
23: 光学カバーの高さ変更用の溝
30: 本発明の第3実施形態に係るLED照明装置(LED電球)
31: 受信部
32: LED光源の支持台
33: 回転軸
34: モーター
41: LED光源の支持面

1: Highly diffusive material 2: Incident light 3: Scattered light (by Lambert scattering) 10: LED illumination device (LED bulb) according to the first embodiment of the present invention
11: Base 12: Base 13: Main surface 14: LED light source 15: Optical cover 16: Outer part of optical cover 17: Top part of optical cover 18: Claw 19a for preventing slipping: Claw 19b for fixing height: Height Fixing recess 20: LED lighting device (LED bulb) according to the second embodiment of the present invention
21: Optical cover support (support)
22: Supported portion (claw) of optical cover
23: Groove 30 for changing the height of the optical cover 30: LED lighting device (LED bulb) according to the third embodiment of the present invention
31: Receiver 32: LED light source support 33: Rotating shaft 34: Motor 41: LED light source support surface

Claims (8)

  1. LEDチップがパッケージに実装されたLED光源と、
    前記LED光源を主面上において支持する基台と、
    前記基台の前記主面側に設置される、前記LED光源を覆う透光性の光学カバーと、を備え、
    前記光学カバーは、外周部と、前記外周部と接続する頂上部からなり、
    前記光学カバーの前記外周部及び前記頂上部が、光拡散性を有し、
    前記主面上に前記LED光源が支持される面からみた前記光学カバーの前記外周部の相対的な高さを、使用状態において前記基台に前記光学カバーと前記LED光源が支持された状態で固定し、且つ、その使用状態における高さを調整する機構を備えることを特徴とするLED照明装置。
    An LED light source in which an LED chip is mounted in a package;
    A base for supporting the LED light source on the main surface;
    A translucent optical cover installed on the main surface side of the base and covering the LED light source;
    The optical cover is composed of an outer peripheral part and a top connected to the outer peripheral part,
    The outer peripheral portion and the top of the optical cover have light diffusibility,
    The relative height of the outer peripheral portion of the optical cover as viewed from the surface on which the LED light source is supported on the main surface, in a state where the optical cover and the LED light source are supported on the base in use. An LED lighting device comprising a mechanism for fixing and adjusting a height in a use state .
  2. 前記光学カバーの前記外周部の相対的な高さが高いほど配光範囲が広がり、低いほど配光範囲が狭くなることを特徴とする請求項1に記載のLED照明装置。The LED illumination device according to claim 1, wherein the light distribution range is widened as the relative height of the outer peripheral portion of the optical cover is higher, and the light distribution range is narrowed as the lower is lower.
  3. 前記光学カバーの被支持部を、前記LED光源が支持される面と垂直な方向に出退させる機構を備えることを特徴とする請求項1又は2に記載のLED照明装置。 Wherein the supported portion of the optical cover, LED lighting device according to claim 1 or 2, wherein the LED light source is characterized in that it comprises a mechanism makes extending and retracting in a direction perpendicular to the plane to be supported.
  4. 前記光学カバーの円筒状の前記被支持部に、ねじ山とねじ溝が形成され、
    前記光学カバーを回転させることで、前記光学カバーの前記被支持部と前記基台が螺合し、前記主面上に前記LED光源が支持される面からみた前記光学カバーの前記外周部の相対的な高さが調整されることを特徴とする請求項に記載のLED照明装置。
    A thread and a thread groove are formed on the cylindrical supported portion of the optical cover,
    By rotating the optical cover, the supported portion and the base of the optical cover are screwed together, and the outer peripheral portion of the optical cover as viewed from the surface on which the LED light source is supported on the main surface. The LED lighting device according to claim 3 , wherein a specific height is adjusted.
  5. 前記主面の前記LED光源が支持される位置を、前記LED光源が支持される面と垂直な方向に上下させる機構を備えることを特徴とする請求項1〜4の何れか一項に記載のLED照明装置。   5. The mechanism according to claim 1, further comprising a mechanism for moving up and down a position of the main surface where the LED light source is supported in a direction perpendicular to the surface where the LED light source is supported. LED lighting device.
  6. 前記光学カバーの前記外周部は、円筒状であり、
    前記光学カバーの前記頂上部は、LED光源の出射方向に突出した球面状であることを特徴とする請求項1〜5の何れか一項に記載のLED照明装置。
    The outer peripheral portion of the optical cover is cylindrical.
    The LED lighting device according to claim 1, wherein the top of the optical cover has a spherical shape protruding in an emission direction of the LED light source.
  7. 前記主面上に前記LED光源が支持される面からみた前記光学カバーの前記外周部の相対的な高さをリモコンで制御可能に構成されていることを特徴とする請求項1〜6の何れか一項に記載のLED照明装置。 The remote controller is configured to control a relative height of the outer peripheral portion of the optical cover as viewed from a surface on which the LED light source is supported on the main surface. The LED lighting device according to claim 1.
  8. 前記基台の前記主面と反対側に、電球ソケットに螺合し、交流電力を供給する口金を備え、
    前記基台の内部に、前記交流電力を直流電力に変換し、前記LEDチップに電力を供給するための電源回路を備えることを特徴とする請求項1〜7の何れか一項に記載の電球型のLED照明装置。
    On the opposite side of the main surface of the base, a base that is screwed into a light bulb socket and supplies AC power is provided.
    The electric bulb according to any one of claims 1 to 7, further comprising a power supply circuit for converting the AC power into DC power and supplying power to the LED chip inside the base. Type LED lighting device.
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