JP5903594B2 - LED lighting fixtures - Google Patents

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JP5903594B2
JP5903594B2 JP2011085184A JP2011085184A JP5903594B2 JP 5903594 B2 JP5903594 B2 JP 5903594B2 JP 2011085184 A JP2011085184 A JP 2011085184A JP 2011085184 A JP2011085184 A JP 2011085184A JP 5903594 B2 JP5903594 B2 JP 5903594B2
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裕光 河野
裕光 河野
和慶 西垣
和慶 西垣
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Panasonic Intellectual Property Management Co Ltd
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Description

本発明は、LEDを光源として防犯灯等に適用されるLED照明器具に関する。   The present invention relates to an LED lighting apparatus applied to a security light or the like using an LED as a light source.

従来より、青色・緑色光が豊富なスペクトル特性の光を歩道に照射し、緑色・赤色光が豊富なスペクトル特性の光を車道に照射するLED照明器具が知られている(例えば、特許文献1参照)。   2. Description of the Related Art Conventionally, LED lighting apparatuses are known that irradiate sidewalks with light having a spectral characteristic rich in blue and green light, and irradiate light with spectral characteristics rich in green and red light on a roadway (for example, Patent Document 1). reference).

特開2008−91232号公報(図1、請求項1)Japanese Patent Laying-Open No. 2008-91232 (FIG. 1, claim 1)

通常、蛍光灯やLED等を適用したLED照明器具においては、明るい環境(明所視)において明所視輝度を高める設計がなされている。
これは、明所視において、明るさを知覚する錐体を働かせるためであり、明所視輝度を高めることにより、人がより明るく知覚することができる。
In general, an LED lighting apparatus using a fluorescent lamp, an LED, or the like is designed to increase photopic brightness in a bright environment (photopic vision).
This is to make the cone for perceiving brightness work in photopic vision. By increasing the photopic brightness, a person can perceive brighter.

しかしながら、夜間の街路空間や道路空間などの所謂薄明視環境下においては、分光視感効率のピーク値が555nmである錐体に加えて分光視感効率のピーク値が507nm周辺である桿体が働くために、明所視輝度だけを高めてもその効果は低い。
そこで、特許文献1は、人の網膜に存在する錐体および桿体の両方が薄明視において働くことを考慮して、錐体および桿体のそれぞれに効果が現れるような複数の光源を備えた。
However, in a so-called mesopic environment such as a night street space or a road space, in addition to a cone whose spectral luminous efficiency peak value is 555 nm, there is a housing whose spectral luminous efficiency peak value is around 507 nm. Even if only the photopic brightness is increased to work, the effect is low.
Therefore, Patent Document 1 is provided with a plurality of light sources that are effective in each of the cone and the rod in consideration of the fact that both the cone and the rod existing in the human retina work in thin vision. .

そして、それら光源の内の少なくとも1つが桿体の分光視感効率のピーク波長(暗所視感度のピーク波長)である507nm周辺を含む波長領域となるようにピーク値が450〜550nmの間となる構成とされる。
そのため、特許文献1は、青色・緑色光が豊富なスペクトル特性の光を歩道に照射し、緑色・赤色光が豊富なスペクトル特性の光を車道に照射することにより、自動車の運転手が歩道上の歩行者等を視認し易くできる。
The peak value is between 450 to 550 nm so that at least one of the light sources is in a wavelength region including around 507 nm, which is the peak wavelength of the spectral luminous efficiency of the housing (peak wavelength of dark place visual sensitivity). It becomes the composition which becomes.
Therefore, Patent Document 1 irradiates the sidewalk with light with spectral characteristics rich in blue and green light, and irradiates the road with light with spectral characteristics rich in green and red light. It is easy to visually recognize pedestrians.

このように、特許文献1は、ピーク値が450〜550nmの間となる構成の光源を備えることにより、薄明視における視認性の向上を図っている。
しかし、このようなプルキンエ現象を利用した特許文献1は、照射範囲の全体の光の色温度が低いために、寒々しい雰囲気を作っていた。
As described above, Patent Document 1 aims at improving visibility in thin vision by including a light source having a peak value between 450 and 550 nm.
However, Patent Document 1 using such a Purkinje phenomenon creates a cold atmosphere because the color temperature of light in the entire irradiation range is low.

本発明は、前述した課題を解決するためになされたものであり、その目的は、照射範囲の全体が寒々しい雰囲気にならないようにできるLED照明器具を提供することにある。   The present invention has been made to solve the above-described problems, and an object thereof is to provide an LED lighting apparatus that can prevent the entire irradiation range from becoming a cold atmosphere.

本発明に係るLED照明器具は、被照射面の上方に配置される器具本体と、前記器具本体に設けられる光源と、を備え、前記光源から下方に光を照射して前記被照射面を照明するLED照明器具であって、前記光源として、前記被照射面における前記器具本体の直下を含む第1範囲に光を照射する第1LEDと、前記第1LEDの、前記器具本体の長手方向における両側に配置されると共に、前記第1範囲の周囲の第2範囲を照射する第2LEDと、が設けられ、前記第2LEDは、507〜555nmにピーク波長を含み、前記第2LEDの色温度は、8000〜12000Kであり、前記第1LEDの色温度は、4000〜5500Kであり、前記第1LEDの照射範囲である前記第1範囲は、赤色および黄色が豊富な光が照射される範囲であり、前記第2LEDの照射範囲である前記第2範囲は、青色および緑色が豊富な光が照射される範囲である。 An LED lighting apparatus according to the present invention includes an apparatus main body disposed above an irradiated surface and a light source provided in the apparatus main body, and illuminates the irradiated surface by irradiating light downward from the light source. LED lighting fixtures, wherein the light source is a first LED that irradiates light in a first range including directly under the fixture body on the irradiated surface, and both sides of the first LED in the longitudinal direction of the fixture body. And a second LED that irradiates a second range around the first range, and the second LED includes a peak wavelength in a range of 507 to 555 nm, and the color temperature of the second LED is 8000 to 5,000. a 12000K range, the first 1LED color temperature, 4000~5500K der is, the first 1LED said first range which is an irradiation range of the red and yellow-rich light is irradiated , And the second range which is an irradiation range of the first 2LED are area by der the blue and green rich light is irradiated.

本発明に係るLED照明器具は、前記第1LEDは第1基板に実装され、前記第2LEDは第2基板に実装され前記第1基板および前記第2基板が同一の構造部材に取り付けられる。 In the LED lighting apparatus according to the present invention, the first LED is mounted on a first substrate, the second LED is mounted on a second substrate, and the first substrate and the second substrate are attached to the same structural member.

本発明に係るLED照明器具によれば、照射範囲の全体が寒々しい雰囲気にならないようにできるという効果を奏する。   According to the LED lighting apparatus of the present invention, there is an effect that the entire irradiation range can be prevented from becoming a cold atmosphere.

本発明に係る第1実施形態のLED照明器具の垂直断面図The vertical sectional view of the LED lighting fixture of a 1st embodiment concerning the present invention. 本発明に係る第2実施形態のLED照明器具の垂直断面図The vertical sectional view of the LED lighting fixture of a 2nd embodiment concerning the present invention

以下、本発明に係る複数の実施形態のLED照明器具について図面を参照して説明する。
(第1実施形態)
図1に示すように、本発明に係る第1実施形態のLED照明器具10は、屋外の防犯灯に適用され、器具本体11と、器具本体11に取り付けられる固定部材12とを備える。
LED照明器具10は、固定部材12に取り付けられる第1LEDユニット13,一対の第2LEDユニット14と、レンズ15とを備える。
なお、LED照明器具10は、屋外の防犯灯に代えて、ホール等の天井面に設置されてもよい。
Hereinafter, LED lighting fixtures according to a plurality of embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
As shown in FIG. 1, the LED lighting apparatus 10 according to the first embodiment of the present invention is applied to an outdoor crime prevention lamp, and includes an apparatus main body 11 and a fixing member 12 attached to the apparatus main body 11.
The LED lighting apparatus 10 includes a first LED unit 13 attached to the fixing member 12, a pair of second LED units 14, and a lens 15.
The LED lighting fixture 10 may be installed on a ceiling surface of a hall or the like instead of an outdoor crime prevention light.

器具本体11は、防水処理が施されており、基部が地中に埋設された支柱16の上端部に固定されている。器具本体11には、不図示の電源ユニットが収容される。電源ユニットは、外部の電源回路に電気的に接続される。
固定部材12は、平面の板形状に形成されて、器具本体11に収容される。
The instrument main body 11 is waterproofed, and the base is fixed to the upper end of a column 16 embedded in the ground. The appliance main body 11 houses a power supply unit (not shown). The power supply unit is electrically connected to an external power supply circuit.
The fixing member 12 is formed in a flat plate shape and is accommodated in the instrument body 11.

単一の固定部材12には、その下面の中央部に第1LEDユニット13が取り付けられ、その下面の両側部に一対の第2LEDユニット14が取り付けられる。
固定部材12には、3枚のLED基板17が取り付けられる。
第1LEDユニット13は、中央部のLED基板17に第1LED18が実装される。
The single fixing member 12 has a first LED unit 13 attached to the center portion of the lower surface thereof, and a pair of second LED units 14 attached to both side portions of the lower surface thereof.
Three LED boards 17 are attached to the fixing member 12.
In the first LED unit 13, the first LED 18 is mounted on the central LED substrate 17.

図1中の左方側の第2LEDユニット14は、図1中左方側のLED基板17に第2LED19が実装される。
図1中の右方側の第2LEDユニット14は、図1中右方側のLED基板17に第2LED19が実装される。
従って、第1LEDユニット13および一対の第2LEDユニット14が、単一の固定部材12に一括的に取り付けられるために、取付時の作業性を良好にできる。
The second LED unit 14 on the left side in FIG. 1 has the second LED 19 mounted on the LED board 17 on the left side in FIG.
The second LED unit 14 on the right side in FIG. 1 has the second LED 19 mounted on the LED board 17 on the right side in FIG.
Accordingly, since the first LED unit 13 and the pair of second LED units 14 are attached to the single fixing member 12 in a lump, workability at the time of attachment can be improved.

レンズ15は、例えば乳白色に着色された樹脂部材であって、第1LEDユニット13および一対の第2LEDユニット14を覆うように固定部材12の下方側に取り付けられる。
レンズ15には、第1LEDユニット13に対応した入射面20および出射面21が形成される。
The lens 15 is a resin member colored, for example, milky white, and is attached to the lower side of the fixing member 12 so as to cover the first LED unit 13 and the pair of second LED units 14.
An incident surface 20 and an exit surface 21 corresponding to the first LED unit 13 are formed on the lens 15.

レンズ15には、図1中の左方側の第2LEDユニット14に対応した入射面22および出射面23と、図1中の右方側の第2LEDユニット14に対応した入射面24および出射面25とが、中央部の入射面20および出射面21に一体に形成される。
レンズ15は、第1LEDユニット13の第1LED18および一対の第2LEDユニット14の第2LED19の配光を制御する。
なお、第1LEDユニット13の第1LED18および一対の第2LEDユニット14の第2LED19の配光は、固定部材12の取付位置を変更させることによっても制御できる。
The lens 15 includes an entrance surface 22 and an exit surface 23 corresponding to the second LED unit 14 on the left side in FIG. 1, and an entrance surface 24 and an exit surface corresponding to the second LED unit 14 on the right side in FIG. 25 are integrally formed on the entrance surface 20 and the exit surface 21 at the center.
The lens 15 controls the light distribution of the first LED 18 of the first LED unit 13 and the second LED 19 of the pair of second LED units 14.
The light distribution of the first LED 18 of the first LED unit 13 and the second LED 19 of the pair of second LED units 14 can also be controlled by changing the mounting position of the fixing member 12.

LED照明器具10は、プルキンエ現象を適用する。
通常、人間は、色を網膜の視細胞によって感知する。具体的に、網膜で働く細胞が、暗順応が進むにつれて錐状体から桿状体に代わるために起こる。
そのため、周囲が明るい環境においては、相対的に色温度の低い光による照明を行う方が相対的に色温度の高い光による照明を行う場合に比べて、視認性が高くなることが知られている。
The LED lighting apparatus 10 applies the Purkinje phenomenon.
Normally, humans perceive color by retinal photoreceptor cells. Specifically, this occurs because the cells working in the retina change from cones to rods as dark adaptation progresses.
For this reason, in a bright environment, it is known that illumination with light having a relatively low color temperature is more visible than illumination with light having a relatively high color temperature. Yes.

また、周囲が暗い環境においては、相対的に色温度の高い光による照明を行う方が相対的に色温度の低い光による照明を行う場合に比べて、視認性が高くなることが知られている。
これらがプルキンエ現象によるもので、周囲が明るい環境では、相対的に色温度の低い光が明るく見え、相対的に色温度の高い光が暗く見える。
また、周囲が暗い環境では、プルキンエ現象によって、相対的に色温度の低い光が暗く見え、相対的に色温度の高い光が明るく見える。
In a dark environment, it is known that illumination with light with a relatively high color temperature is more visible than illumination with light with a relatively low color temperature. Yes.
These are due to Purkinje's phenomenon. In a bright environment, light with a relatively low color temperature appears bright and light with a relatively high color temperature appears dark.
In an environment where the surroundings are dark, light with a relatively low color temperature appears dark and light with a relatively high color temperature appears bright due to Purkinje's phenomenon.

すなわち、直下付近を照射する第1LEDユニット13の第1LED18が、4000〜5500Kの色温度を有して、507nmよりも高い波長を有する。
そして、直下よりも外周側を照射する第2LEDユニット14の第2LED19が、プルキンエ現象の効果を得るように、8000〜12000Kの色温度を有し、507〜555nmにピーク波長を含む。
That is, the 1st LED18 of the 1st LED unit 13 which irradiates near immediately below has a color temperature of 4000-5500K, and has a wavelength higher than 507 nm.
And the 2nd LED19 of the 2nd LED unit 14 which irradiates an outer peripheral side rather than just under has a color temperature of 8000-12000K so that the effect of Purkinje phenomenon may be acquired, and includes a peak wavelength in 507-555 nm.

このようなLED照明器具10は、外部の電源回路から電源ユニットに給電されることにより、LED基板17に有する不図示のプリント回路に電流が流れて、第1LED18および第2LED19が発光する。
このとき、中央部の第1LED18が4000〜5500Kの色温度を有して第2LED19のピーク波長よりも高い波長を有するために、中央部の真下の範囲θ1に、赤色および黄色が豊富な光が照射される。
In such an LED lighting apparatus 10, when power is supplied from an external power supply circuit to the power supply unit, a current flows through a printed circuit (not shown) on the LED substrate 17, and the first LED 18 and the second LED 19 emit light.
At this time, since the first LED 18 in the central portion has a color temperature of 4000 to 5500 K and a wavelength higher than the peak wavelength of the second LED 19, light rich in red and yellow is present in the range θ1 directly below the central portion. Irradiated.

同時に、両側部の第2LED19が8000〜12000Kの色温度を有して507〜555nmにピーク波長を含むために、直下よりも外周側の暗闇側の範囲θ2に、青色および緑色が豊富な光がそれぞれ照射される。
そのため、LED照明器具10は、プルキンエ現象を利用して、照射範囲θ1,θ2の全体において寒々しい雰囲気にならない。
At the same time, since the second LEDs 19 on both sides have a color temperature of 8000 to 12000 K and include a peak wavelength at 507 to 555 nm, light that is rich in blue and green is in the dark side range θ2 on the outer peripheral side rather than just below. Each is irradiated.
Therefore, the LED lighting apparatus 10 does not have a cold atmosphere in the entire irradiation ranges θ1 and θ2 using the Purkinje phenomenon.

以上、説明したように第1実施形態のLED照明器具10によれば、第2LED19が507〜555nmにピーク波長を含み、第1LED18が第2LED19よりも高い波長を有し、第2LED19よりも色温度が低い。
従って、第1実施形態のLED照明器具10によれば、照射範囲θ1,θ2の全体において寒々しい雰囲気にならないようにできる。
As described above, according to the LED lighting apparatus 10 of the first embodiment, the second LED 19 includes a peak wavelength at 507 to 555 nm, the first LED 18 has a higher wavelength than the second LED 19, and the color temperature is higher than that of the second LED 19. Is low.
Therefore, according to the LED lighting apparatus 10 of the first embodiment, it is possible to prevent a cold atmosphere in the entire irradiation ranges θ1 and θ2.

また、第1実施形態のLED照明器具10によれば、第2LED19の色温度が8000〜12000Kであって、第1LED18の色温度が4000〜5500Kであるために、スペクトルを適宜変更することによりプルキンエ現象に適応できる。   Moreover, according to the LED lighting fixture 10 of 1st Embodiment, since the color temperature of 2nd LED19 is 8000-12000K, and the color temperature of 1st LED18 is 4000-5500K, Purkinje can be changed by changing a spectrum suitably. Can adapt to the phenomenon.

そして、第1実施形態のLED照明器具10によれば、第1LEDユニット13および一対の第2LEDユニット14が、単一の固定部材12に一括的に取り付けられるために、取付時の作業性を良好にできる。   And according to the LED lighting fixture 10 of 1st Embodiment, since the 1st LED unit 13 and a pair of 2nd LED unit 14 are attached to the single fixing member 12 collectively, workability | operativity at the time of attachment is favorable. Can be.

(第2実施形態)
次に、本発明に係る第2実施形態のLED照明器具について説明する。
なお、以下の第2実施形態において、前述した第1実施形態と重複する構成要素や機能的に同様な構成要素については、図中に同一符号あるいは相当符号を付することによって説明を簡略化あるいは省略する。
(Second Embodiment)
Next, the LED lighting fixture of 2nd Embodiment which concerns on this invention is demonstrated.
Note that, in the following second embodiment, components that are the same as those in the first embodiment described above or components that are functionally similar are denoted by the same or corresponding reference numerals in the drawings, or the description is simplified. Omitted.

図2に示すように、本発明に係る第2実施形態のLED照明器具30は、台形の固定部材31を備えており、固定部材31の中央の底部下面32に第1LEDユニット13が取り付けられ、固定部材31の傾斜側面33に一対の第2LEDユニット14が取り付けられる。
そのため、第1LEDユニット13の第1LED18が直下付近を照射し、一対の第2LEDユニット14の第2LED19が固定部材31の傾斜側面33により直下よりも外周側を照射することになる。
なお、固定部材31は、コ字形状に屈曲させた板部材を用いることもできる。
As shown in FIG. 2, the LED lighting device 30 according to the second embodiment of the present invention includes a trapezoidal fixing member 31, and the first LED unit 13 is attached to the bottom bottom surface 32 at the center of the fixing member 31. A pair of second LED units 14 is attached to the inclined side surface 33 of the fixing member 31.
Therefore, the first LED 18 of the first LED unit 13 irradiates the vicinity immediately below, and the second LED 19 of the pair of second LED units 14 irradiates the outer peripheral side of the fixing member 31 from directly below the inclined side 33.
The fixing member 31 may be a plate member bent into a U shape.

第2実施形態のLED照明器具30によれば、設置場所に応じて、固定部材31の傾斜側面33の傾斜角度を適宜変更しておくことにより、照射範囲を狭めたり、あるいは、拡げたりできる。   According to the LED lighting apparatus 30 of the second embodiment, the irradiation range can be narrowed or expanded by appropriately changing the inclination angle of the inclined side surface 33 of the fixing member 31 according to the installation location.

なお、本発明のLED照明器具において器具本体,LED基板,支柱等は、前述した各実施形態に限定されるものでなく、適宜な変形や改良等が可能である。   In addition, in the LED lighting fixture of this invention, an instrument main body, an LED board, a support | pillar, etc. are not limited to each embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.

10,30 LED照明器具
12,31 固定部材(構造部材)
17 LED基板(基板)
18 第1LED
19 第2LED
10,30 LED lighting fixture 12,31 Fixing member (structural member)
17 LED board (board)
18 First LED
19 Second LED

Claims (2)

被照射面の上方に配置される器具本体と、前記器具本体に設けられる光源と、を備え、前記光源から下方に光を照射して前記被照射面を照明するLED照明器具であって、
前記光源として、前記被照射面における前記器具本体の直下を含む第1範囲に光を照射する第1LEDと、前記第1LEDの、前記器具本体の長手方向における両側に配置されると共に、前記第1範囲の周囲の第2範囲を照射する第2LEDと、が設けられ、
前記第2LEDは、507〜555nmにピーク波長を含み、
前記第2LEDの色温度は、8000〜12000Kであり、
前記第1LEDの色温度は、4000〜5500Kであり、
前記第1LEDの照射範囲である前記第1範囲は、赤色および黄色が豊富な光が照射される範囲であり、
前記第2LEDの照射範囲である前記第2範囲は、青色および緑色が豊富な光が照射される範囲であるLED照明器具。
An LED lighting device that includes an instrument body disposed above an illuminated surface, and a light source provided in the instrument body, and illuminates the illuminated surface by irradiating light downward from the light source,
As the light source, the first LED for irradiating light on a first range including the portion directly under the device main body on the irradiated surface, and the first LED on both sides in the longitudinal direction of the device main body, and the first LED A second LED for illuminating a second range around the range, and
The second LED includes a peak wavelength at 507 to 555 nm,
The color temperature of the second LED is 8000 to 12000K.
Wherein said 1LED color temperature, Ri 4000~5500K der,
The first range that is the irradiation range of the first LED is a range in which light rich in red and yellow is irradiated,
Wherein said second range is the irradiation range of the 2LED the range der Ru LED luminaire blue and green rich light is irradiated.
請求項1に記載のLED照明器具において、
前記第1LEDは第1基板に実装され、前記第2LEDは第2基板に実装され、前記第1基板および前記第2基板が同一の構造部材に取り付けられるLED照明器具。
In the LED lighting fixture of Claim 1,
The LED lighting device, wherein the first LED is mounted on a first substrate, the second LED is mounted on a second substrate, and the first substrate and the second substrate are attached to the same structural member.
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