WO2011055479A1 - 反射鏡付きledランプ - Google Patents
反射鏡付きledランプ Download PDFInfo
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- WO2011055479A1 WO2011055479A1 PCT/JP2010/005474 JP2010005474W WO2011055479A1 WO 2011055479 A1 WO2011055479 A1 WO 2011055479A1 JP 2010005474 W JP2010005474 W JP 2010005474W WO 2011055479 A1 WO2011055479 A1 WO 2011055479A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/357—Driver circuits specially adapted for retrofit LED light sources
- H05B45/3574—Emulating the electrical or functional characteristics of incandescent lamps
- H05B45/3577—Emulating the dimming characteristics, brightness or colour temperature of incandescent lamps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
- F21V23/002—Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
- F21V23/007—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing
- F21V23/009—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing the casing being inside the housing of the lighting device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/40—Lighting for industrial, commercial, recreational or military use
- F21W2131/405—Lighting for industrial, commercial, recreational or military use for shop-windows or displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2105/00—Planar light sources
- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/345—Current stabilisation; Maintaining constant current
Definitions
- the present invention relates to an LED lamp with a reflector, and more particularly, to an LED lamp with a reflector suitable as a substitute for a halogen light bulb with a reflector.
- the halogen bulb with a reflector is, for example, a combination of a reflector having a spheroid shape on the reflecting surface and a halogen bulb, and is used as spot lighting in stores and museums.
- an LED lamp with a reflecting mirror formed by combining an LED (light emitting diode) with a longer lifetime and less power consumption than a halogen bulb and a reflecting mirror has been studied. Yes.
- an object of the present invention is to provide an LED lamp with a reflector that can obtain a better spot light than a case where a lamp is configured by simply arranging a plurality of LEDs.
- an LED lamp with a reflector includes a reflector having a spheroidal reflection surface, and a plane perpendicular to the optical axis of the reflector in the reflector.
- a plurality of LEDs arranged on the light source, and a lighting circuit for lighting the plurality of LEDs, wherein the plurality of LEDs are at a first distance from the optical axis and a first distance.
- the light beam per LED belonging to the first group belongs to the second group during lighting by the lighting circuit. More than the luminous flux per LED.
- the LED belonging to the first group is one LED arranged at a position intersecting the optical axis, and the LED belonging to the second group is on a circumference centered on the optical axis.
- the optical axis is symmetrical about the optical axis.
- the reflecting mirror is a reflecting mirror having an opening diameter of 40 mm
- the second group includes four LEDs arranged on a circle having a diameter of 4 mm. The one LED is lit with at least twice the luminous flux of each LED of the second group.
- the LEDs belonging to the first group and the LEDs belonging to the second group are on a concentric circle with the optical axis as the center, and are arranged symmetrically with respect to the optical axis.
- the reflecting mirror is a reflecting mirror having an opening diameter of 40 mm
- the first group includes four LEDs arranged on a circumference of 2.8 mm in diameter.
- This group consists of eight LEDs arranged on a circumference of 6.3 mm in diameter, and each LED in the first group is lit with at least twice the luminous flux of each LED in the second group. It is characterized by that.
- the plurality of LEDs arranged on the plane orthogonal to the optical axis of the reflector are the first group and the first distance at the first distance from the optical axis.
- the light flux per LED belonging to the first group is divided into at least two groups of the second group at a second distance longer than the second group, and the light flux per LED belonging to the second group is more lighted. Therefore, compared with the case where all of the plurality of LEDs are assumed to be simply lit with the same luminous flux, more luminous flux is concentrated on the optical axis, so that the light collecting property by the reflector is reduced. As a result, it is possible to obtain better spot light than that assumed above.
- FIG. (A) is the sectional view on the AA line in FIG. 1
- (b) is an enlarged plan view of the LED module.
- (A) in the first embodiment and the comparative example shows the condition of the luminous flux of each LED in the light distribution characteristic investigation, and (b) shows a part of the investigation result.
- the light distribution curve which is a part of the survey results is shown.
- (A) in Embodiment 2 and the comparative example shows the condition of the luminous flux of each LED in the light distribution characteristic investigation, and (b) shows a part of the investigation result.
- the light distribution curve which is a part of the survey results is shown.
- FIG. 1 is a longitudinal cross-sectional view showing a schematic configuration of an LED bulb 10 with a reflector according to the first embodiment.
- a circuit board 30, a mounting board 42, and components mounted on these boards, which will be described later, are not cut.
- the LED bulb 10 with a reflector includes a base 12, a lighting circuit unit 14, a heat sink 16, a reflector 18, a front glass 20, an LED module 22, and the like.
- the base 12 has a main body portion 14 made of an electrically insulating material.
- One end portion of the main body 14 is formed in a substantially cylindrical shape, and a shell 26 is fitted into the cylindrical portion. Further, one end side of the cylindrical portion is formed in a substantially truncated cone shape, and an eyelet 28 is fixed to the top of the truncated cone.
- the opposite side of the main body 24 where the eyelet 28 is provided is formed in a hollow shape whose diameter increases with distance from the eyelet 28, and a part of the lighting circuit unit 14 is accommodated in the hollow part. .
- the lighting circuit unit 14 includes a circuit board 30 and a plurality of electronic components 32 mounted on the circuit board 30.
- the lighting circuit unit 14 and the eyelet 28 are electrically connected by a first lead wire 34, and the lighting circuit unit 14 and the shell 26 are electrically connected by a second lead wire 36, respectively.
- the lighting circuit unit 14 converts commercial AC power supplied via the eyelet 28, the shell 26, the first lead wire 34, and the second lead wire 36 into power for lighting the LED module 22, and the LED module. Power is supplied to 22.
- the configuration of the lighting circuit unit 14 will be described later.
- the heat sink 16 has a cylindrical portion 16 ⁇ / b> A, and half of the cylindrical portion 16 ⁇ / b> A is fitted in the hollow portion of the main body portion 24.
- a bottomed cylindrical portion 16B is provided in the cylindrical portion 16A, and the bottomed cylindrical portion 16B and the cylindrical portion 16A are integrated by a flange portion 16C extending from an opening of the bottomed cylindrical portion 16B.
- the heat sink 16 is made of aluminum, and is integrally molded as a whole by die casting or lost wax.
- the reflecting mirror 18 is made of borosilicate glass and has a glass substrate 38 having a funnel shape.
- a multilayer interference film 40 constituting a reflective surface is formed on a concave surface portion 38A formed on the spheroidal surface of the glass substrate 38.
- the multilayer interference film 40 can be formed of silicon dioxide (SiO 2 ), titanium dioxide (TiO 2 ), magnesium fluoride (MgF 2 ), zinc sulfide (ZnS), or the like in addition to a metal film such as aluminum or chromium. Thereby, a reflective surface having a high reflectance is formed.
- the reflecting mirror 18 has an opening diameter (mirror inner diameter) of 40 mm.
- the 40 mm size means that the opening diameter is in the range of 38 mm to 42 mm.
- the reflecting mirror 18 is a so-called narrow-angle reflecting mirror.
- the range of “10 degrees ⁇ 25%” is referred to as “reference beam angle”.
- the neck portion 38 ⁇ / b> B of the reflecting mirror 18 is fitted into the upper portion of the cylindrical portion 16 ⁇ / b> A of the heat sink 16.
- the front glass 20 is fixed to the opening of the reflecting mirror 18 with an adhesive.
- the LED module 22 is attached to the outer bottom of the bottomed cylindrical portion 16B of the heat sink 16.
- a cross-sectional view taken along the line AA in FIG. 1 is shown in FIG.
- the LED module 22 includes a mounting substrate 42 and a plurality of (in this example, five) white LEDs 44, 46, 48, 50, 52.
- the mounting substrate 42 includes a circular insulating plate 54 and a wiring pattern (not shown) formed on the upper surface of the insulating plate 54, and has a mounting surface orthogonal to the optical axis X (FIG. 1) of the reflecting mirror 18.
- the white LEDs 44, 46, 48, 50, 52 are mounted on the mounting surface.
- the white LEDs 44, 46, 48, 50, and 52 all have the same configuration and the same size, and are composed of, for example, an LED chip (not shown) and a phosphor-dispersed resin that seals the LED chip (shown in the drawing).
- the square is the outline of the phosphor-dispersed resin.
- an LED chip that emits blue light is used.
- a silicone resin can be used as the resin of the phosphor dispersion resin.
- the dispersed phosphor powder include (Ba, Sr) 2 SiO 4 : Eu 2+ and Y 3 (Al, Ga) 5 O 12 : Ce 3+ yellow-green phosphor powder and Sr 2 Si 5 N 8.
- Red phosphor powders such as: Eu 2+ and (Ca, Sr) S: Eu 2+ can be used.
- the LED chip emits light
- the blue light emitted from the LED chip is partially absorbed by each phosphor and converted into yellow-green light or red light. Blue light, yellow-green light, and red light are combined into white light, which is emitted from the phosphor-dispersed resin.
- the white LEDs 44, 46, 48, 50, and 52 have a size of 1 mm square in a plan view shown in FIG. 2A (that is, the outer shape of the phosphor-dispersed resin is 1 mm square).
- the positions of the white LEDs 44, 46, 48, 50, 52 in the optical axis X direction are such that the upper surface, which is the main light emitting surface of the LEDs 44, 46, 48, 50, 52, is the focal point f of the reflecting mirror 18.
- the position of the focal point f or the vicinity thereof is more preferable.
- FIG. 2B shows an enlarged view of the LED module 22.
- the white LED 44 is provided at a position intersecting the optical axis X.
- the remaining white LEDs 46, 48, 50, 52 are on the circumference of a circle C centered on the optical axis X, and are arranged symmetrically about the optical axis X (in this example, the optical axis X is the center). Are arranged at equal angular intervals on the circumference of the circle C). The diameter of the circle C is 4 mm. That is, the white LEDs 46, 48, 50, 52 are arranged at a distance of 1 mm from the central white LED 44.
- the white LEDs 46, 48, 50, 52 are connected in series by a wiring pattern (not shown), and are lit independently of the central white LED 44. That is, the five white LEDs are divided into a first group (white LEDs 44) and a second group (white LEDs 46, 48, 50, 52), and are lit on a group basis.
- the first group is electrically connected to the lighting circuit unit 14 by a third lead wire 56 and a fourth lead wire 58
- the second group is a fifth lead wire 60 and a sixth lead wire 62, respectively.
- FIG. 3 shows a block diagram of the lighting circuit unit 14.
- the lighting circuit unit 14 includes an AC / DC converter 64, a first constant current circuit 66, and a second constant current circuit 68.
- the AC / DC converter 64 converts AC power from the commercial AC power supply AC into DC power.
- the first constant current circuit 66 supplies a constant current from the DC power to the first group 70.
- the second constant current circuit 68 supplies a constant current from the DC power to the second group 72.
- the current supplied by the first constant current circuit 66 is larger than the current supplied by the second constant current circuit 68.
- the white LEDs 44 of the first group 70 during lighting are turned on.
- the luminous flux is larger than each of the white LEDs 46, 48, 50, 52 of the second group 72.
- the inventors of the present application found that the luminous flux [lm] per white LED is combined with the first group 70 and the second group 72 as shown in FIG.
- the light distribution characteristic (light distribution curve) on the irradiated surface 1 [m] away was investigated.
- the luminous flux of all white LEDs is set to 60 [lm].
- the luminous flux of the white LEDs in the first group 70 is made larger than the luminous flux of each white LED in the second group 72. That is, the ratio of the luminous flux of each white LED of the second group 72 to the white LED of the first group 70 is 2 in Example 1-1, 4 in Example 1-2, and 8 in Example 1-3. Each is set.
- the investigation result (light distribution curve) is shown in FIG. 5, and the maximum luminous intensity [cd] and the beam opening (beam angle) [degree] in each combination are shown in FIG. 4 (b).
- FIG. 5 shows that the light distribution curve is sharper in the example than in Comparative Example 1, and better spot light can be obtained.
- Comparative Example 1 Since Comparative Example 1 has a beam angle of 12.8 degrees, which exceeds the upper limit of the reference beam angle of the above-described halogen bulb with a reflector (FIG. 4B), it is an alternative to the halogen bulb. It is not preferable.
- the beam angle is 9.8 degrees, which is within the range of the reference beam angle, and can be suitably used as a substitute for the halogen light bulb with a reflector.
- the luminous flux of the white LEDs 44 (first group 70) arranged at the position intersecting the optical axis X is derived from the luminous flux of each of the white LEDs 46, 48, 50, 52 (second group 72) arranged around the periphery. It can be seen that the beam angle can be made narrower than when all the five white LEDs are lit with the same luminous flux (Comparative Example 1).
- Example 1-2 and Example 1-3 if the difference in the luminous flux of the white LEDs of the first group 70 and the second group 72 is increased, the beam angle is further increased. It becomes narrower (FIG. 4B), and it can be seen that good spot light can be obtained.
- the white LED 44 of the first group 70 is turned on with at least twice the luminous flux of each white LED 46, 48, 50, 52 of the second group 72, so that the beam angle is within the range of the reference beam angle.
- the LED bulb with a reflector according to Embodiment 2 has basically the same configuration as the LED bulb with reflector 10 of Embodiment 1 except that the number and arrangement of white LEDs are different. Therefore, the following description will focus on the different parts.
- FIG. 6 is a plan view of the LED module 74 of the LED bulb with a reflector according to the second embodiment.
- the first group of white LEDs 76, 78, 80, 82 are connected in series by a wiring pattern (not shown) of the mounting substrate 100, and the second group of white LEDs 84, 86, 88, 90, 92, 94, 96. , 98 are also connected in series by a wiring pattern (not shown) of the mounting board.
- the lighting circuit unit of the structure similar to the case of Embodiment 1 namely, after converting commercial alternating current power into direct-current power, the direct-current power is divided into two systems and supplied to each group
- the white LEDs of the first group and the second group are turned on.
- the inventors of the present application made a difference between the luminous flux of each white LED in the first group and the luminous flux of each white LED in the second group, and investigated the light distribution characteristics.
- the luminous flux of all white LEDs is set to 25 [lm].
- the luminous flux of each white LED in the first group is made larger than the luminous flux of each white LED in the second group. That is, the ratio of the luminous flux of each white LED in the second group to each white LED in the first group is set to 2 in Example 2-1 and 4 in Example 2-2.
- the investigation result (light distribution curve) is shown in FIG. 8, and the maximum luminous intensity [cd] and the beam opening (beam angle) [degree] in each combination are shown in FIG. 7 (b).
- FIG. 8 shows that the light distribution curve is sharper in the example than in Comparative Example 2, and better spot light can be obtained.
- the beam angle is 13.8 degrees, which exceeds the upper limit of the reference beam angle of the above-described halogen bulb with a reflector (FIG. 7B). It is not preferable.
- the beam angle is 11.6 degrees, which is within the range of the reference beam angle, and can be suitably used as an alternative to a halogen bulb with a reflector.
- Example 2-1 and Example 2-2 the beam angle is further narrowed if the difference in luminous flux between the white LEDs of the first group and the second group is increased. (FIG. 7B), it can be seen that good spot light can be obtained.
- each white LED 76, 78, 80, 82 in the first group is lit with a luminous flux at least twice that of each white LED 84, 86, 88, 90, 92, 94, 96, 98 in the second group.
- the beam angle falls within the range of the reference beam angle.
- the reflecting mirror in the above embodiment is composed of the glass substrate and the multilayer interference film formed on the concave surface having the spheroidal shape of the glass substrate.
- the present invention is not limited to this. I do not care.
- the reflecting mirror by using a molded product of aluminum, the reflecting mirror also functions as a second heat sink that further dissipates the heat transmitted from the heat sink 16 (FIG. 1). ) Can be further increased. As a result, the luminous intensity can be improved.
- the plurality of white LEDs are divided into the first and second groups.
- the present invention is not limited to this, and the white LEDs may be divided into three or more groups.
- N is an integer of 2 or more
- the beam angle becomes smaller than when the plurality of LEDs are all lit with the same luminous flux. it is conceivable that. This is because it is considered that the light condensing property by the reflecting mirror is improved by concentrating more light beams on the optical axis (the focal point of the reflecting mirror).
- the difference in the luminous flux per LED (luminous flux ratio) between each group is appropriately determined according to the size of the reflecting mirror, the arrangement interval of the plurality of LEDs, etc. It is possible to obtain spot light (having a beam angle) that is condensed to a level equal to or greater than that of a light bulb.
- the combination of the emission color of the LED chip and the phosphor powder is not limited to the above, and may be appropriately changed according to the desired light color. In other words, by changing the mixing ratio of yellow-green phosphor powder and red phosphor powder, changing the type of phosphor used, or changing the type of LED chip (light emission color), the color of the light bulb and warm white Various light colors such as white, neutral white, and daylight can be used.
- white LED which consists of a combination of LED chip and fluorescent substance dispersion
- the LED lamp with a reflector according to the present invention can be suitably used as, for example, an LED bulb with a reflector for spot illumination in a store or a museum.
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Abstract
Description
<実施の形態1>
図1は、実施の形態1に係る反射鏡付きLED電球10の概略構成を示す縦断面図である。なお、図1において、後述する回路基板30、実装基板42およびこれらの基板への実装部品については切断していない。
<実施の形態2>
実施の形態2に係る反射鏡付きLED電球は、白色LEDの個数およびその配列が異なる以外は、実施の形態1の反射鏡付きLED電球10と基本的に同様の構成である。よって、以下異なる部分を中心に説明する。
(1)上記実施の形態における反射鏡は、ガラス基体と当該ガラス基体の回転楕円面形状をした凹面に形成された多層干渉膜とで構成したが、これに限らず金属で形成することとしても構わない。この場合に、アルミニウムの成型品を用いることにより、当該反射鏡はヒートシンク16(図1)から伝達される熱をさらに放散させる第2のヒートシンクとしても機能することとなり、LEDに投入できる電力(電流)をさらに増大することができる。その結果、光度を向上させることが可能となる。
(2)上記実施の形態では、複数個の白色LEDを第1および第2の二つのグループに分けたが、これに限らず、三つまたはそれ以上のグループに分けても構わない。この場合に、反射鏡の光軸からの距離が近い順に第1のグループ、第2のグループ、第3のグループ、…、第Nのグループ(Nは2以上の整数)とすると、第(N-1)のグループの各LEDの光束を第Nのグループの各LEDの光束よりも多くすることにより、前記複数個のLEDを全て同じ光束で点灯させたときよりも、ビーム角が小さくなるものと考えられる。光軸(反射鏡の焦点)により多くの光束を集中させることにより、反射鏡による集光性が向上すると考えられるからである。
(3)LEDチップの発光色と蛍光体粉末の組み合わせは、上記したものに限らず、所望とする光色に応じて適宜変更しても構わない。すなわち、黄緑色蛍光体粉末と赤色蛍光体粉末の混合割合を変化させたり、使用する蛍光体の種類を変えたり、LEDチップの種類(発光色)を変えたりすることにより、電球色、温白色、白色、昼白色、昼光色など種々の光色とすることができる。
(4)上記実施の形態では、LEDとしてLEDチップと蛍光体分散樹脂との組み合わせからなる白色LEDを用いたが、これに限らず、LEDはLEDチップのみの構成としても構わない。
14 点灯回路ユニット
18 反射鏡
44,46,48,50,52 白色LED
70 第1グループ
72 第2グループ
76,78,80,82,84,86,88,90,92,94,96,98 白色LED
X 反射鏡の光軸
Claims (5)
- 回転楕円面形状をした反射面を有する反射鏡と、
前記反射鏡内において、当該反射鏡の光軸と直交する平面上に配された複数のLEDと、
前記複数のLEDを点灯するための点灯回路と、
を有し、
前記複数のLEDは、前記光軸から第1の距離にある第1のグループと第1の距離よりも長い第2の距離にある第2のグループの少なくとも二つのグループに分かれており、
前記点灯回路による点灯中、第1のグループに属するLED1個当たりの光束の方が第2のグループに属するLED1個当たりの光束よりも多いことを特徴とする反射鏡付きLEDランプ。 - 前記第1のグループに属するLEDは前記光軸と交差する位置に配された一のLEDであり、前記第2のグループに属するLEDは前記光軸を中心とする円周上に在って、当該光軸を中心に対称に配されていることを特徴とする請求項1に記載の反射鏡付きLEDランプ。
- 前記反射鏡は、開口径が40mmサイズの反射鏡であり、
前記第2のグループは、4個のLEDが直径4mmの円周上に配されて構成され、
第1のグループの前記一のLEDが、第2のグループの各LEDの少なくとも2倍の光束で点灯されることを特徴とする請求項2に記載の反射鏡付きLEDランプ。 - 前記第1のグループに属するLEDと前記第2のグループに属するLEDは、前記光軸を中心とする同心円周上に在って、当該光軸を中心に対称に配されていることを特徴とする請求項1に記載の反射鏡付きLEDランプ。
- 前記反射鏡は、開口径が40mmサイズの反射鏡であり、
前記第1のグループは4個のLEDが、直径2.8mmの円周上に配されて構成され、前記第2のグループは8個のLEDが直径6.3mmの円周上に配されて構成されていて、
第1のグループの各LEDが、第2のグループの各LEDの少なくとも2倍の光束で点灯されることを特徴とする請求項4に記載の反射鏡付きLEDランプ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN201080003101.4A CN102203502B (zh) | 2009-11-09 | 2010-09-07 | 反射器led灯 |
JP2011508747A JP5438099B2 (ja) | 2009-11-09 | 2010-09-07 | 反射鏡付きledランプ |
US13/121,674 US8246221B2 (en) | 2009-11-09 | 2010-09-07 | Reflector LED lamp |
EP10819686A EP2500624A1 (en) | 2009-11-09 | 2010-09-07 | Led lamp with mirror reflector |
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JP2009256064 | 2009-11-09 | ||
JP2009-256064 | 2009-11-09 |
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WO2011055479A1 true WO2011055479A1 (ja) | 2011-05-12 |
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PCT/JP2010/005474 WO2011055479A1 (ja) | 2009-11-09 | 2010-09-07 | 反射鏡付きledランプ |
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Country | Link |
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US (1) | US8246221B2 (ja) |
EP (1) | EP2500624A1 (ja) |
JP (1) | JP5438099B2 (ja) |
CN (1) | CN102203502B (ja) |
TW (1) | TW201116774A (ja) |
WO (1) | WO2011055479A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2013004513A (ja) * | 2011-06-15 | 2013-01-07 | Wellypower Optronics Corp | Led照明器具 |
JP2013065491A (ja) * | 2011-09-20 | 2013-04-11 | Hitachi Appliances Inc | 電球型照明装置 |
JP6330209B1 (ja) * | 2017-10-30 | 2018-05-30 | フェニックス電機株式会社 | Ledランプ、およびそれを備える照明装置 |
Families Citing this family (5)
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CN103185282A (zh) * | 2011-12-28 | 2013-07-03 | 富士迈半导体精密工业(上海)有限公司 | Led灯泡 |
DE202014103178U1 (de) * | 2014-07-10 | 2015-10-13 | BÄ*RO GmbH & Co. KG | Leuchte, insbesondere Downlight- und/oder Spotlight-Leuchte mit einer Lichtquelle |
WO2016057752A1 (en) * | 2014-10-08 | 2016-04-14 | BeON HOME INC. | Illumination systems and associated components |
US10295162B2 (en) * | 2015-10-20 | 2019-05-21 | Philippe Georges Habchi | Modular light bulb with quick and easily user-replaceable independent components |
RU2626059C1 (ru) * | 2016-09-02 | 2017-07-21 | Общество с ограниченной ответственностью "АИРТ" | Способ рециркуляции света и светодиодный модуль рециркуляции |
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- 2010-09-07 JP JP2011508747A patent/JP5438099B2/ja not_active Expired - Fee Related
- 2010-09-07 CN CN201080003101.4A patent/CN102203502B/zh not_active Expired - Fee Related
- 2010-09-07 WO PCT/JP2010/005474 patent/WO2011055479A1/ja active Application Filing
- 2010-09-07 US US13/121,674 patent/US8246221B2/en active Active
- 2010-09-07 EP EP10819686A patent/EP2500624A1/en not_active Withdrawn
- 2010-09-10 TW TW099130647A patent/TW201116774A/zh unknown
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JP2004103443A (ja) * | 2002-09-11 | 2004-04-02 | Toshiba Lighting & Technology Corp | Led照明装置 |
JP2005286267A (ja) * | 2004-03-31 | 2005-10-13 | Hitachi Lighting Ltd | 発光ダイオードランプ |
JP2007041467A (ja) | 2005-08-05 | 2007-02-15 | Y E Data Inc | 露光装置用光源 |
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JP2013004513A (ja) * | 2011-06-15 | 2013-01-07 | Wellypower Optronics Corp | Led照明器具 |
JP2013065491A (ja) * | 2011-09-20 | 2013-04-11 | Hitachi Appliances Inc | 電球型照明装置 |
JP6330209B1 (ja) * | 2017-10-30 | 2018-05-30 | フェニックス電機株式会社 | Ledランプ、およびそれを備える照明装置 |
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Also Published As
Publication number | Publication date |
---|---|
TW201116774A (en) | 2011-05-16 |
CN102203502A (zh) | 2011-09-28 |
CN102203502B (zh) | 2015-07-01 |
US20110233578A1 (en) | 2011-09-29 |
EP2500624A1 (en) | 2012-09-19 |
JPWO2011055479A1 (ja) | 2013-03-21 |
JP5438099B2 (ja) | 2014-03-12 |
US8246221B2 (en) | 2012-08-21 |
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