JP2008300295A - Lighting device - Google Patents

Lighting device Download PDF

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Publication number
JP2008300295A
JP2008300295A JP2007147393A JP2007147393A JP2008300295A JP 2008300295 A JP2008300295 A JP 2008300295A JP 2007147393 A JP2007147393 A JP 2007147393A JP 2007147393 A JP2007147393 A JP 2007147393A JP 2008300295 A JP2008300295 A JP 2008300295A
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Japan
Prior art keywords
light
case
reflector
diffuser
led module
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Pending
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JP2007147393A
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Japanese (ja)
Inventor
Norio Yasuoka
則雄 安岡
Naoki Tani
直樹 谷
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Sharp Corp
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Sharp Corp
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Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP2007147393A priority Critical patent/JP2008300295A/en
Publication of JP2008300295A publication Critical patent/JP2008300295A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00Lighting devices intended to be free-standing
    • F21S6/002Table lamps, e.g. for ambient lighting
    • F21S6/003Table lamps, e.g. for ambient lighting for task lighting, e.g. for reading or desk work, e.g. angle poise lamps

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device that can prevent surely a shadow by light from a light source. <P>SOLUTION: The lighting device can be composed of a plurality of light sources such as LEDs and ELs, a reflector which reflects back the light of the light sources in the irradiation direction, and a diffuser which diffuses the light from the plurality of light sources and/or from the reflector to prevent shadows on an irradiation surface. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は電気スタンド、ウォールライト等の屋内照明器具、街灯、信号等の屋外照明器具に関し、特に、LED(発光ダイオード)、有機EL(エレクトロ・ルミネッセンス)等の光源を備え、該光源からの光による影を確実に防止することができる照明装置に関するものである。   The present invention relates to indoor lighting fixtures such as desk lamps and wall lights, outdoor lighting fixtures such as street lights and signals, and more particularly to light sources such as LEDs (light emitting diodes) and organic EL (electroluminescence), and light from the light sources. It is related with the illuminating device which can prevent reliably the shadow by.

従来の照明装置、例えば電気スタンドは図10に示すように、支柱30を備え、上記支柱30の下端部に形成するスタンドベース20を備え、上記支柱30の上端部に形成するスタンド頭部10を備え、上記スタンド頭部10に多数の発光ダイオードを配置し、上記スタンドベース20に上記各発光ダイオードへ給電する蓄電池を内蔵し、上記スタンドベース20に上記蓄電池を充電する充電器を内蔵し、上記充電器に商用電源電圧を降圧するダウントランスを設け、上記蓄電器・充電器の重みで上記スタンドベース20を机上面等の上に安定に載置することを特徴とする(例えば、特許文献1参照)。
特開2004−165115号公報
As shown in FIG. 10, a conventional lighting device, for example, a desk lamp, includes a support column 30, a stand base 20 formed at the lower end portion of the support column 30, and a stand head 10 formed at the upper end portion of the support column 30. A plurality of light emitting diodes are arranged on the stand head 10; a storage battery for supplying power to the light emitting diodes is built in the stand base 20; a charger for charging the storage battery is built in the stand base 20; A down transformer for stepping down the commercial power supply voltage is provided in the charger, and the stand base 20 is stably placed on the desk top surface or the like with the weight of the battery / charger (see, for example, Patent Document 1) ).
JP 2004-165115 A

しかしながら、特許文献1に記載されているスタンド照明では、発光ダイオードの光がそのまま照射されるため、発光ダイオードの数だけ影が出現するため、視認性が悪くなるという課題があった。
本発明は上記のような課題を解決するためになされたもので、光源からの光による影を確実に防止することができる照明装置を提供することを目的とするものである。
However, in the stand illumination described in Patent Document 1, since light from the light-emitting diodes is irradiated as it is, shadows appear as many as the number of light-emitting diodes, and there is a problem that visibility is deteriorated.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an illuminating device that can reliably prevent a shadow caused by light from a light source.

本発明に係る照明装置は、複数のLED、EL等の光源と、該複数の光源の光を照射方向に反射させる反射体と、該複数の光源からの光及び/若しくは反射体からの光を照射面での影を防止すべく拡散させる拡散体とを備えてなることを特徴とする。
本発明にあっては、光源からの光による影を確実に防止することができる照明装置を実現できる。
An illumination device according to the present invention includes a plurality of light sources such as LEDs and EL, a reflector that reflects light from the plurality of light sources in an irradiation direction, light from the plurality of light sources and / or light from the reflector. And a diffuser that diffuses to prevent shadows on the irradiated surface.
In this invention, the illuminating device which can prevent reliably the shadow by the light from a light source is realizable.

本発明によれば、拡散部により光源からの光を拡散できるため、光源からの光による影を確実に防止することができる照明装置を実現できる。   According to the present invention, since the light from the light source can be diffused by the diffusing unit, it is possible to realize an illuminating device that can reliably prevent shadows from the light from the light source.

(実施の形態)
以下、本発明の照明装置の実施の形態を、電気スタンドに実施した場合について、図1から図9を用いて説明する。
本発明の照明装置1は、図1から図9に示すように、光源を構成する複数個の平面銭型状のLEDモジュール2を、アルミ、銅等の熱伝導性の高い金属にて形成した第1のケース3の内面中央に設けた凹部33に配設し、該複数個のLEDモジュール2からの光を反射させる板状の反射体4を、上記第1のケース3とアルミダイキャストで形成した第2のケース5とで形成される空間に配置し、該第2のケース5に上記LEDモジュール2からを光及び/若しくは反射体4からの光を机等の被照射面での影を防止すべく拡散させる拡散体6を設けて構成するものである。
(Embodiment)
Hereinafter, the case where the embodiment of the lighting device of the present invention is applied to a desk lamp will be described with reference to FIGS.
As shown in FIGS. 1 to 9, the lighting device 1 of the present invention is formed of a plurality of planar-shaped LED modules 2 constituting a light source with a metal having high thermal conductivity such as aluminum and copper. The plate-like reflector 4 that is disposed in the concave portion 33 provided in the center of the inner surface of the first case 3 and reflects the light from the plurality of LED modules 2 is formed by aluminum die casting with the first case 3. It is arranged in a space formed by the formed second case 5, and the light from the LED module 2 and / or the light from the reflector 4 is reflected on the second case 5 on the irradiated surface such as a desk. In order to prevent this, a diffuser 6 that diffuses is provided.

なお、上記構成において、上記複数個のLEDモジュール2はモジュール基板にLED素子を例えば36個平面的に配設してなるものであり、また、上記第1のケース3は上記LEDモジュール2からの熱を外面に放熱するための表面積を高めるべくリブ31を多数形成するとともに、上記LEDモジュール2からの熱を空気の対流にて外部へ放熱させるスリット孔32を設けてなり、例えば、アルミダイキャストにて形成されるものである。   In the above configuration, the plurality of LED modules 2 are formed by arranging, for example, 36 LED elements on a module substrate in a plane, and the first case 3 is formed from the LED module 2. A large number of ribs 31 are formed to increase the surface area for radiating heat to the outer surface, and slit holes 32 are provided to radiate the heat from the LED module 2 to the outside by air convection. For example, aluminum die casting Is formed.

上記反射体4は、例えばステンレスもしくはステンレスに反射率の高い塗装を施して、または拡散性を有する反射材であるMCPET(登録商標)等の樹脂製部材にて形成し、断面台形状で、上記LEDモジュール2を覆って(囲って)、上記LEDモジュール2の光を被照射面方向のみに向かって反射させるべく、被照射面方向に向かって拡開する形状に構成してなり、上記LEDモジュール2に電源を供給するリード線の配線切欠部41を設けてなるものである。   The reflector 4 is made of, for example, stainless steel or a stainless steel or a resin member such as MCPET (registered trademark), which is a reflective material having a diffusibility, and is formed of a trapezoidal cross section. The LED module 2 is formed so as to cover (enclose) the LED module 2 so as to reflect the light of the LED module 2 only in the direction of the irradiated surface. 2 is provided with a wiring notch 41 for a lead wire for supplying power.

上記第2のケース5は、上記LEDモジュール2からの熱を空気の対流にて外部へ放熱させる側壁55に水平方向に細長いスリット孔51を複数個設けると共に底壁56に複数のスリット孔52を設け、拡散体6の配設孔57を設けてなるものである。   The second case 5 is provided with a plurality of horizontally elongated slit holes 51 in the side wall 55 for radiating heat from the LED module 2 to the outside by air convection, and a plurality of slit holes 52 in the bottom wall 56. Provided is a disposing hole 57 for the diffuser 6.

上記拡散体(拡散板)6は例えば、ポリカーボネイト、アクリル等からなる拡散性を有するシート状部材にて形成してなるものであり、上記照明装置1を電気スタンドとして使用する場合は、上記第2のケース5に切欠部54を設けて、該切欠部54を介してアーム7を取り付けて使用するものである。
また、上記アーム7をパイプ状に形成した場合、上記LEDモジュール2に電源を供給する電源コードをアーム7内部に配設することができる。
図1、図7、図8において、53は拡散体6を第2のケース5に装着するための装着孔である。
The diffuser (diffusion plate) 6 is formed of a sheet-like member having a diffusibility made of, for example, polycarbonate, acrylic, etc. When the lighting device 1 is used as a desk lamp, the second The case 5 is provided with a notch 54, and the arm 7 is attached through the notch 54 for use.
When the arm 7 is formed in a pipe shape, a power cord for supplying power to the LED module 2 can be disposed inside the arm 7.
In FIGS. 1, 7, and 8, reference numeral 53 denotes a mounting hole for mounting the diffuser 6 to the second case 5.

上記のように構成してなる照明装置1は、LEDに電源が供給させることによりLEDモジュールが発光し、その発光したLEDモジュール2の光が直接もしくは反射体4を介して拡散体6にて被照射面での影を防止すべく拡散させ、被照射体に照射させるものである。   In the illumination device 1 configured as described above, the LED module emits light when power is supplied to the LED, and the light of the emitted LED module 2 is covered by the diffuser 6 directly or via the reflector 4. It diffuses to prevent shadows on the irradiated surface and irradiates the irradiated object.

上記の場合、LEDモジュール2から発生する熱は第1のケース3及び第2のケース5自身から放熱され、さらに、第1のケース3のスリット孔32から空気の対流にて外部に放熱されると共に、第1のケース3のリブ31に熱伝導され外気に放熱される。その上、第2のケース5の側壁のスリット孔51及び底壁のスリット孔52にて空気の対流にて外部に放熱される。   In the above case, the heat generated from the LED module 2 is radiated from the first case 3 and the second case 5 itself, and further radiated to the outside from the slit hole 32 of the first case 3 by air convection. At the same time, the heat is conducted to the rib 31 of the first case 3 and is radiated to the outside air. In addition, heat is radiated to the outside by air convection through the slit hole 51 on the side wall of the second case 5 and the slit hole 52 on the bottom wall.

上記反射体4はLEDモジュール2を覆って(囲って)、上記LEDモジュール2の光を被照射面方向のみに向かって反射させ、また、拡散体6にて反射した光を再び拡散体6に戻すべく反射させるので、LEDモジュール2の光は拡散体6からのみ光を照射することができ、第1のケースのスリット孔32及び第2のケースのスリット孔51及びスリット孔52から光が照射されることがなく、第1のケースのスリット孔32及び第2のケースのスリット孔51及びスリット孔52からの光の漏れを確実に防止することができる。そして、拡散体6の明るさを均一にすることができる。   The reflector 4 covers (encloses) the LED module 2 to reflect the light of the LED module 2 only in the irradiated surface direction, and the light reflected by the diffuser 6 is returned to the diffuser 6 again. Since it is reflected to return, the light of the LED module 2 can be irradiated only from the diffuser 6, and the light is irradiated from the slit hole 32 of the first case and the slit hole 51 and the slit hole 52 of the second case. Thus, leakage of light from the slit hole 32 of the first case and the slit hole 51 and the slit hole 52 of the second case can be reliably prevented. And the brightness of the diffuser 6 can be made uniform.

上記拡散体6は、透過率を変えることにより、LEDモジュール2の外部からの見え方を異ならせることができる。従って、LEDモジュール2と拡散体6の空間距離、必要照度、影の出方を考慮して、必要とする透過率を決定するものである。   The diffuser 6 can change the appearance of the LED module 2 from the outside by changing the transmittance. Therefore, the required transmittance is determined in consideration of the spatial distance between the LED module 2 and the diffuser 6, the required illuminance, and the shadow appearance.

本発明の照明装置の実施の形態を示す下方から視た要部斜視図The principal part perspective view seen from the lower part which shows embodiment of the illuminating device of this invention 本発明の照明装置の実施の形態を示す上方から視た要部斜視図The principal part perspective view seen from the upper direction which shows embodiment of the illuminating device of this invention 図1の要部分解斜視図1 is an exploded perspective view of the main part of FIG. 本発明の照明装置の第1のケースの平面図The top view of the 1st case of the illuminating device of this invention 本発明の照明装置の第1のケースの背面図The rear view of the 1st case of the illuminating device of this invention (a)は本発明の照明装置の第1のケースの正面図、(b)はその側面図(A) is a front view of the 1st case of the illuminating device of this invention, (b) is the side view. 本発明の照明装置の第2のケースの平面図The top view of the 2nd case of the illuminating device of this invention 本発明の照明装置の第2のケースの背面図The rear view of the 2nd case of the illuminating device of this invention (a)は本発明の照明装置の第2のケースの正面図、(b)はその側面図(A) is a front view of the 2nd case of the illuminating device of this invention, (b) is the side view. 従来の電気スタンドの斜視図A perspective view of a conventional desk lamp

符号の説明Explanation of symbols

1 照明装置
2 LEDモジュール
3 第1のケース
4 反射体
5 第2のケース
6 拡散体
7 アーム
31 リブ
32,51,55 スリット孔
DESCRIPTION OF SYMBOLS 1 Illuminating device 2 LED module 3 1st case 4 Reflector 5 2nd case 6 Diffuser 7 Arm 31 Rib 32, 51, 55 Slit hole

Claims (3)

複数のLED、EL等の光源と、該複数の光源の光を照射方向に反射させる反射体と、該複数の光源からの光及び/若しくは反射体からの光を照射面での影を防止すべく拡散させる拡散体とを備えてなることを特徴とする照明装置。   A plurality of light sources such as LEDs and EL, a reflector that reflects light from the plurality of light sources in the irradiation direction, and light from the plurality of light sources and / or light from the reflector to prevent shadows on the irradiation surface An illuminating device comprising a diffuser that diffuses as much as possible. 上記複数の光源から発生する熱を外部に放熱する放熱孔及び/若しくはリブを装置本体に備えてなることを特徴とする請求項1に記載の照明装置。   The lighting device according to claim 1, further comprising a heat radiating hole and / or a rib for radiating heat generated from the plurality of light sources to the outside. 上記反射体が放熱孔からの光漏れを防止すべく形成してなることを特徴とする請求項2に記載の照明装置。
The lighting device according to claim 2, wherein the reflector is formed to prevent light leakage from the heat radiating hole.
JP2007147393A 2007-06-01 2007-06-01 Lighting device Pending JP2008300295A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011018483A (en) * 2009-07-07 2011-01-27 Nec Lighting Ltd Lighting stand

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011018483A (en) * 2009-07-07 2011-01-27 Nec Lighting Ltd Lighting stand

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