CN102644864B - Light-emitting device and use the ligthing paraphernalia of this light-emitting device - Google Patents
Light-emitting device and use the ligthing paraphernalia of this light-emitting device Download PDFInfo
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Abstract
A kind of light-emitting device and use the ligthing paraphernalia of this light-emitting device.In light-emitting device, substrate forms a group by multiple LED of the light of the different colourity of injection, and this light-emitting device has this group multiple.Each group at least comprises the LED penetrating white light, and the distance (d1) between each group is set to be greater than the distance (d2) between the adjacent LED in group.Thus, with equally spaced configure on substrate predetermined quantity LED situation compared with, from the easy colour mixture of the coloured light of LED in each group, the form and aspect being therefore difficult to produce emergent light are uneven, in addition owing to comprising the LED of white light, the light not having the white of form and aspect inequality is therefore easily obtained.
Description
Technical field
The present invention relates to a kind of light-emitting device and use the ligthing paraphernalia of this light-emitting device, the multiple LED making illuminant colour different (Light Emitting Diode: light emitting diode) colour mixture and irradiating.
Background technology
Fig. 8 (a) to (d) represents the example of the multiple LED colour mixture making illuminant colour different and the light-emitting device irradiated.In Fig. 8 (a), (b), light-emitting device 100 is configured to be distinguished by the LED102 of the light of different for multiple injection colourity, 103 on the substrate 101 alternately with distance dx equally spaced linearity installation arrangement.In this light-emitting device 100, such as, carry out mixed exposure from the residing predetermined distance h place intersections such as the light penetrating panel of cover that are used as that the light of the LED102 of the random colour for penetrating R, G, B, 2 looks of 103 is square on the substrate 101.
In addition, as this light-emitting device, be known to following light-emitting device: on substrate, configure the multiple solid-state light emitting devices be made up of LED and fluorophor thick and fast, from the light that each solid-state light emitting devices injection illuminant colour is different, above-mentioned light mixing penetrated (such as with reference to patent document 1).This light-emitting device by rectangular to be alternately configured at equal intervals on substrate for each LED of this 3 coloured light of injection R, G, B, thus obtains mixed light.
But, in recent years along with the light beam from LED element monomer increases, even if reduce quantity substrate arranging the LED body of installation, also required light quantity can be obtained.And on the other hand, in order to the heat radiation of LED, the substrate area being provided with LED needs the condition acquired a certain degree not change.Therefore, as shown in Fig. 8 (c), (d), reduce compared with the situation shown in Fig. 8 (a), (b) LED102,103 quantity, and when configuring at equal intervals on the substrate of same size, each LED is configured to its interval dy and is greater than interval dx.
Prior art document
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2009-238729 publication
The problem that invention will solve
But, as shown in Fig. 8 (c), (d), if the interval dy of each LED expands, then from LED102,103 light predetermined distance h place same as described above of side is not intersected with each other on the substrate 101.Therefore, with in the light-emitting device being configured with each LED at equal intervals, be difficult to colour mixture from multiple light sending the LED of different color light, irradiate light and easily produce form and aspect inequality (Japanese: look む ら).Further, when by described in above-mentioned patent document 1 make the light-emitting device of this 3 color contamination look of R, G, B be used for ligthing paraphernalia, if above-mentioned 3 looks can not colour mixture equably, then cannot irradiate the light of white.
Summary of the invention
The present invention makes to solve the problem, its object is to the light colour mixture at the multiple LED making self-luminous colour different and carry out in the light-emitting device irradiated, provide a kind of form and aspect being difficult to produce its emergent light uneven and the light-emitting device of the white not having form and aspect inequality can be obtained.
For the method for dealing with problems
In order to achieve the above object, a kind of light-emitting device of the present invention, it is characterized in that, a group is formed by multiple solid-state light emitting elements of the light of the different colourity of injection, this light-emitting device has this group multiple, each group in above-mentioned group at least comprises the solid-state light emitting element penetrating white light, and the distance between above-mentioned each group is set to be greater than the distance between the solid-state light emitting element in group.
Preferably, in this light-emitting device, each group in the above-mentioned group solid-state light emitting element comprising the light penetrating incandescent light color.
Preferably, in this light-emitting device, each group in above-mentioned group comprises each solid-state light emitting element penetrated respectively by the light of the colourity of at least 2 looks in redness, blueness, green.
Preferably, in this light-emitting device, each group in above-mentioned group has the optics of the light colour mixture from each solid-state light emitting element.
Preferably, in this light-emitting device, above-mentioned optics is the reflection part of the light that reflection is derived from above-mentioned solid-state light emitting element.
Preferably, in this light-emitting device, above-mentioned optics is by the lens of the light colour mixture derived from above-mentioned solid-state light emitting element.
Preferably, in this light-emitting device, the centre of luminescence spacing of the closest adjacent solid-state light emitting element in above-mentioned group is within 15mm, and the light beam of each above-mentioned solid-state light emitting element is 10 lumen ~ 600 lumens when 100% lights.
Preferably, in this light-emitting device, also have the proliferation part of light co-diffused made from above-mentioned each group of injection, the distance between above-mentioned each group or the three-dimensional viewpoin from the light of this luminescence group derivation are configured to around the light that makes to derive from the above-mentioned solid-state light emitting element projection section on above-mentioned proliferation part adjacent one another are or overlapping.
In addition, a kind of ligthing paraphernalia of the present invention, has above-mentioned light-emitting device.
Invention effect
According to light-emitting device of the present invention, with equally spaced configure predetermined quantity solid-state light emitting element situation compared with, often easily intersect and colour mixture from the light of each light-emitting component in group, therefore, it is possible to make the irradiation light of different colourity reduce, be difficult to produce form and aspect uneven.In addition, in organizing, the solid-state light emitting element penetrating white light is comprised, therefore, it is possible to irradiate the look not having the white of form and aspect inequality.
Accompanying drawing explanation
Fig. 1 is the structure chart of the light-emitting device involved by the 1st embodiment of the present invention.
Fig. 2 is the sectional view of the irradiating state of the light of each LED represented from above-mentioned light-emitting device.
Fig. 3 is structure chart when changing the configuration space of LED between luminous group of above-mentioned light-emitting device.
Fig. 4 is the structure chart of the variation of above-mentioned light-emitting device.
Fig. 5 is the sectional structure chart of the light-emitting device involved by the 2nd embodiment of the present invention.
Fig. 6 is the sectional structure chart of the variation of above-mentioned light-emitting device.
Fig. 7 (a) is the sectional structure chart of the light-emitting device involved by the 3rd embodiment of the present invention, and Fig. 7 (b) is the figure of the projection pattern of irradiation light on proliferation part of the light-emitting device represented from Fig. 7 (a).
Fig. 8 (a) is the structure chart of existing light-emitting device, Fig. 8 (b) is the sectional view of the irradiating state of the light of each LED of the light-emitting device represented from Fig. 8 (a), Fig. 8 (c) is the structure chart of the situation at the interval of each LED of the light-emitting device expanding Fig. 8 (a), and Fig. 8 (d) is the sectional view of the irradiating state of the light of each LED of the light-emitting device represented from Fig. 8 (c).
Detailed description of the invention
(the 1st embodiment)
With reference to Fig. 1 and Fig. 2, the light-emitting device involved by the 1st embodiment of the present invention is described.As shown in Figure 1, light-emitting device 1 have substrate 2 and on a substrate 2 arrangement install and multiple LED31 of injection colourity light different from each other, 32 (solid-state light emitting element is referred to as 3).In addition, in light-emitting device 1, LED31,32 forms luminous group 4a, 4b, 4c (group is commonly referred to as 4), and above-mentioned each luminescence group 4 at least comprises the LED of the light of injection white.In addition, light-emitting device 1 is such as used as to be installed on the ligthing paraphernalia of end face by sectional fixture (not shown) or to be embedded in the down-ejection type lamp (downlight) in roof face.
In the present embodiment, LED31,32 comprises the solid-state light emitting element of the solid-state light emitting element penetrating white light and the light penetrating incandescent light color (Japanese: Electricity ball look) respectively, and alternately configures along the center line 20 of the length direction of substrate 2 and penetrate irradiation light upward from the LED installed surface of substrate 2.In addition, the solid-state light emitting element of light of injection white can be made up of White LED etc., and this White LED is such as formed by the blue-led element sending blue light and the yellow fluorophor that sent sodium yellow by the optical excitation from blue-led element.In addition, the solid-state light emitting element penetrating the light of incandescent light color uses the element light of blue-led element being transformed to incandescent light color by fluorophor.In addition, each LED and fluorophor also can be built in each other in the packaging bodies such as pottery and be installed on substrate 2.In addition, each solid-state light emitting element also can by installing LED element and consist of the parts that fluorophor covers on pottery, aluminium base.Now, send multiple photochromic by being coated with different types of fluorophor on each element.
Each luminescence group 4 comprises LED31,32 respectively, and the length direction along substrate 2 is adjacent to form successively, and the distance d1 between adjacent each luminescence group 4 is set to be greater than the beeline d2 between the LED3 in each group 4.At this, the distance d1 between each luminescence group 4 be each group 4 from each LED31,32 the centre of luminescence of irradiation light that formed of light between distance.In addition, the distance d2 between the LED31,32 in each luminescence group 4 is the distance between the centre of luminescence of the irradiation light of each LED3.In addition, each group distance d1 may not be at equal intervals, is also same about distance d2, above-mentioned distance d1, d2 can according to arrange substrate 2 setting unit shape, cover the shape through cover of LED3 and at random set.
When configuring this LED, the distance dy between the LED that the substrate of the distance d2 between the LED31 on substrate 2,32 than the same size shown in aforesaid Fig. 8 (c) configures at equal intervals is short, each LED31,32 closer to each other.Therefore, each luminescence group 4 is intensive and be configured on substrate 2 according to classification, each classification based on from LED31,32 the combination of each coloured light (in this case white and incandescent light color).
In addition, within the distance d2 between each LED31,32 is set to 15mm, and above-mentioned LED31,32 light beam be set to 10 ~ 600 lumens when 100% lights.In addition, substrate 2 uses printed base plate, ceramic substrate etc. for installing LED etc., and its shape is not limited to illustrated rectangle, also can be circle or polygon etc.In addition, such as, power circuit (not shown) by substrate 2 is formed, powers to each LED3 via the wiring pattern on this substrate 2.In addition, each LED31,32 controls its emergent light respectively by power circuit, can adjust the mixed proportion of above-mentioned coloured light.
Fig. 2 represents the irradiating state coming self-luminous group 4a, each LED31 of 4b, the light of 32 when observing light-emitting device 1 from the side of substrate 2.In each luminescence group 4, each LED31,32 with each other be spaced apart distance d2 and closer to each other, therefore from the predetermined distance h place intersection of each LED31, the white of 32 and the light side on a substrate 2 of incandescent light color, form the mixed light based on above-mentioned coloured light and irradiate.In addition, also can by from each LED31,32 the three-dimensional viewpoin observed of each centre of luminescence of irradiation light
be set to mutually the same, such as, the milky panel, skin plate etc. of the diffusion covering light-emitting device 1 be set to the exit facet of the equivalence of mixed light, determine predetermined distance h according to the distance between this exit facet and substrate 2.
According to the present embodiment, with configure at equal intervals predetermined quantity LED3 situation compared with, often organize in 4 and easily intersect and colour mixture from the light of each LED3, therefore, it is possible to make the irradiation light of different colourity reduce, be difficult to produce form and aspect inequality.In addition, in each group 4, the LED3 penetrating white light is comprised, therefore, it is possible to irradiate the look of the white not having form and aspect inequality.
In addition, because the centre of luminescence spacing (d2) of each LED3 is within 15mm, if therefore such as by three-dimensional viewpoin
be set to more than 90 degree, then can by from LED31,32 the distance h of crossover location of light be close to 7.5mm within, mixed light can be formed at lower height.In addition, LED31,32 light beam be set to 10 ~ 600 lumens when 100% lights, thus below 10 lumens can not be become when lighting, therefore the situation that dimmed thus coloured light cannot mix can not occur to irradiate.In addition, can not more than 600 lumens during owing to lighting, therefore, it is possible to avoid overexposure to become clear and dazzle causes differentiating the situation of secondary colour.
In addition, in the present embodiment, illustrate one luminous group and comprise the LED31,32 structures of each that penetrate the light of white and the light of incandescent light color respectively, as long as but at least one be the LED31 of the white light of injection in multiple LED3 in each group 4.Also can be such as that LED31 is more than 2 in each group 4, or the LED32 of the light penetrating incandescent light color it be more than 2.
In addition, the configuration of each LED3 of each luminescence group 4 does not need all to configure regularly.Thus, also can such as shown in Figure 3, the LED interval of each luminescence group 4, the central portion that heat is easily concentrated in substrate 2, expands interval to a certain extent and configures equably, at the periphery of substrate 2, by intensive for each LED3 category and configure.In this case, the LED31,32 of luminous group 4a, 4c forms classifications and configures thick and fast at the periphery of substrate 2, the LED31 in the group 4b of the central portion of substrate 2,32 and luminescence group 4a, 4c compared with expansion interval each other and configuring.
(variation)
The variation of the light-emitting device of above-mentioned embodiment is described with reference to Fig. 4.In the light-emitting device 1 of this variation, each luminescence group 4 except comprising the LED of the light of injection white, also comprises the LED of the light of the colourity of at least 2 looks penetrated respectively in redness, blueness, green respectively respectively.In this light-emitting device 1, luminous group 4d ~ 4f comprises the LED31 of the light of injection white (W) respectively and penetrates the LED33,34 and 35 of light of each colourity of redness (R), green (G), blueness (B) respectively.
Above-mentioned LED31 and 33 ~ 35 is configured in along on foursquare 4 summits of the center line 20 on substrate 2 by each luminescence group 4 respectively, distance d2 between closest adjacent LED is within 15mm, shorter than the distance d1 between each luminescence group 4 (4d ~ 4f).At this, light-emitting device 1 is configured to, in each group 4, by each classification be made up of white, red, green and blueness, four LED31,33 ~ 35 intensive respectively.Each luminescence group 4, by controlling white light and red, green and blue light mixed proportion separately, can obtain various mixed light.Such as, when obtaining the light of white by each group 4, suppressing each coloured light of R, G, the B from LED33 ~ 35, improving the mixed proportion of the white light from LED31.Now, each group 4 easily can not cause 3 coloured light of R, G, B of form and aspect inequality to generate the light of white by the deviation because of colour balance, and forms the light of white by means of only the white light from LED31, therefore, it is possible to obtain the light not having the white of form and aspect inequality.In addition, when and the light of white that form and aspect uneven few good at the colour balance that can be obtained this 3 coloured light of R, G, B by LED33 ~ 35, can cooperate with the white light from LED31 (Japanese: Xiang ?) and obtain the light of brighter white.Especially, when generating white by RGB, due to the deviation of electric current flow through in the deviation of each LED body and each packaging body, the deviation of colourity increases, and therefore by setting up the part being sent white by 1 packaging body, deviation inhibition increases.In addition, the monochrome that there is RGB is situation in sight through diffuser, especially large in output hour its possibility, but by increasing white packaging body, be difficult to see each monochrome, therefore apparent effect is also large.
(the 2nd embodiment)
With reference to Fig. 5, the light-emitting device involved by the 2nd embodiment of the present invention is described.As shown in Figure 5, in the light-emitting device 1 of present embodiment, each luminescence group 4 (4a, 4b) have the optics of the light colour mixture making each LED3 (31,32) in the above-described embodiment, as this optics, use reflecting plate 5.
Reflecting plate 5 has the concave mirror 51 that configuration is formed on a substrate 2 and by the rotary body of the hollow of drum shape (Japanese: cup shape), and each luminescence group 4 (4a, 4b) arrange reflecting plate 5 in the mode of surrounding each LED3 respectively in each concave mirror 51.This reflecting plate 5 is using the rotating shaft of central shaft 21 as rotary body, and this central shaft 21 is through vertical with substrate 2 with the equidistant central point of each LED3 in luminescence group 4.In addition, central shaft 21 is the optical axis of concave mirror 51.
Reflecting plate 5 in each luminescence group 4 by the inner surface of concave mirror 51 reflect respectively from LED31,32 the part of light, and make above-mentioned reverberation intersected with each other, irradiate from the opening of concave mirror 51.At this, LED31,32 penetrates light from its centre of luminescence position with wide-angle, and the light penetrated round about each other from centre of luminescence position substantially in parallel along substrate 2 in above-mentioned emergent light is reflected by concave mirror 51 and intersects.Now, the interval between LED31,32 is set according to from above-mentioned LED31, the three-dimensional viewpoin of emergent light of 32, the curvature etc. of the reflecting surface of concave mirror 51, more easily penetrates to make the mixed light formed by each emergent light.Thus, easily carry out from LED31,32 the mixing of coloured light.
(variation)
Fig. 6 represents the variation of above-mentioned embodiment.In the light-emitting device 1 of this variation, each luminescence group 4 (4a, 4b) have in the above-described embodiment lens 6 as make each LED31,32 the optics of light colour mixture.
Lens 6 with cover each luminescence group 4 in each LED31,32 mode configure on a substrate 2, there is the lens body 60 be made up of the rotary body of rounding frustum shape.Lens body 60 as described above using the central shaft 21 vertical with substrate 2 as rotating shaft, central shaft 21 is the optical axis of lens 6.
Lens body 60 there is the bottom surface that is formed at this lens body 60 and cover respectively LED31,32 the plane of incidence 61, the more inclination angle left between substrate 2 and central shaft 21 in two hemispherical cavities more become large side 62, be formed at the recessed exit facet 63 of the concave shape of lens upper surface and the convex exit facet 64 of convex-shaped.Convex exit facet 64 is formed as from the outstanding shape of the central portion of recessed exit facet 63.
In lens 6, the light sent from the LED31 in luminescence group 4,32 incides in lens body 60 from each plane of incidence 61 respectively, penetrating away from the diffusion of central shaft 21 ground at convex exit facet 64 along the light near central shaft 21 in this incident light.In addition, from being penetrated to central shaft 21 optically focused by recessed exit facet 63 towards the light of recessed exit facet 63 away from central shaft 21 in the incident light of the plane of incidence 61, to be reflected by side 62 from the plane of incidence 61 towards the light of side 62 and reflect at recessed exit facet 63 or convex exit facet 64 and penetrate.Thus, to carry out through lens 6 spreading from the light of the plane of incidence 61 incidence, optically focused and multipath reflection etc., thus intersected with each other.Therefore, it is possible to easily obtain the mixed light of the light sent from each LED3 in each luminescence group 4.
(the 3rd embodiment)
With reference to Fig. 7, the light-emitting device involved by the 3rd embodiment of the present invention is described.As shown in Fig. 7 (a), the light-emitting device 1 of present embodiment also has the proliferation part 7 of the light co-diffused made from the injection of each luminescence group 4 in the above-described embodiment.In light-emitting device 1, the distance d1 between each luminescence group 4 or the three-dimensional viewpoin from each group 4 light of deriving
to be constructed so that around the projection pattern 71 ~ 73 (projection section) of light on proliferation part 7 that derive from the LED3 each group 4 (Japanese: O connects) adjacent one another are or overlapping.Proliferation part 7 can use transparent resin, glass material etc. such as containing light diffusing agent.
Light-emitting device 1 has the framework 8 for proliferation part 7 accommodating plate-shaped on a substrate 2, and the position that it is h that framework 8 is configured in the distance with substrate 2 keeps proliferation part 7.At this, the three-dimensional viewpoin of each luminescence group 4 (4a ~ 4c)
refer to, the three-dimensional viewpoin of the irradiation light of the light integration (Japanese: System closes) penetrated from above-mentioned each LED3 (31,32) observed from the center of each group 4.Such as according to the three-dimensional viewpoin of the irradiation light of each LED
distance d2 between each LED and obtain each projection pattern of irradiation light on proliferation part 7 of each LED3 to the distance h of proliferation part 7, according to obtaining the illumination angle comprising the projection pattern of above-mentioned each projection pattern, obtains this three-dimensional viewpoin equivalently
As shown in Fig. 7 (b), proliferation part 7 projects from the irradiation light of each luminescence group 4a ~ 4c in its plane, forms each projection pattern 71 ~ 73.At this, each LED3 is set to its irradiation light shape and becomes three-dimensional viewpoin
spot light, each projection pattern 71 ~ 73 by from above-mentioned LED3 light project and become circular shape, its external diameter is according to three-dimensional viewpoin
calculate with distance h.In addition, such as, at three-dimensional viewpoin
hour, by being narrowed by the distance d1 between each luminescence group 4, above-mentioned projection pattern 71 ~ 73 can overlap each other.In addition, when distance d1 is long, three-dimensional viewpoin can be increased
expanding projection pattern makes each projection pattern 71 ~ 73 overlap each other.In addition, LED3 is not limited to spot light.
According to the present embodiment, the emergent light from adjacent each luminescence group 4 is intersected with each other on proliferation part 7, and spreads in proliferation part 7 and penetrate, and therefore the colour mixture scope of light increases, and can obtain the mixed light that colourity is uneven less.
In addition, the invention is not restricted to the structure of above-mentioned embodiment, can various distortion be carried out in the scope of main idea not changing invention.Such as, illustrate the situation that luminous group 4 is two or three in the respective embodiments described above, but also can be more than 3 groups.In addition, the LED comprised in luminous group 4 also can comprise solid-state light emitting element or the fluorophor of the look sent except white, incandescent light color, redness, green, blue light.In addition, the configuration shape of multiple LED on substrate except linearity or rectangular-shaped except, also can be polygon-shaped and toroidal.Such light-emitting device can be installed and used on multiple ligthing paraphernalia.
In addition, above-mentioned embodiment 1 to 3 can combine.Such as, reflecting plate and/or the lens of embodiment 2 can be suitable in the light-emitting device of embodiment 1, or be suitable for the proliferation part of embodiment 3, on the basis being suitable for the reflecting plate of embodiment 2, lens, also can be suitable for the proliferation part of embodiment 3 again.
Above, describe the preferred embodiment of the present invention, but the present invention is not limited to above-mentioned particular implementation, numerous variations and correction can be carried out in the scope of claims, can say that this also belongs to scope of the present invention.
Claims (7)
1. a light-emitting device, is characterized in that,
To be installed by arrangement on substrate and the multiple solid-state light emitting elements penetrating the light of different colourity form a group,
This light-emitting device has multiple above-mentioned group,
Each group in above-mentioned group at least comprises the solid-state light emitting element penetrating white light,
Distance between above-mentioned each group is set to be greater than the distance between the solid-state light emitting element in group,
Above-mentioned solid-state light emitting element in the group of the central portion of aforesaid substrate, compared with the above-mentioned solid-state light emitting element in the group of the periphery of aforesaid substrate, expands interval each other and configures,
Each group in above-mentioned group has the lens of the light colour mixture of the solid-state light emitting element in above-mentioned group,
Said lens is configured on aforesaid substrate in the mode covering each above-mentioned solid-state light emitting element in above-mentioned luminous group, has by the lens body formed as the rotary body of the rounding frustum shape of rotating shaft by the axle vertical with aforesaid substrate,
Said lens main body has: the plane of incidence, be formed at said lens main body bottom surface and cover respectively above-mentioned solid-state light emitting element hemispherical cavity; Side, the inclination angle between this side and above-mentioned rotating shaft expands along with leaving aforesaid substrate; The recessed exit facet of concave shape, is formed at said lens upper surface; And the convex exit facet of convex-shaped, be formed as giving prominence to from the central portion of above-mentioned recessed exit facet.
2. light-emitting device according to claim 1, is characterized in that,
The three-dimensional viewpoin observed from each centre of luminescence of the irradiation light of above-mentioned multiple solid-state light emitting element is mutually the same.
3. light-emitting device according to claim 1, is characterized in that,
Each group in the above-mentioned group solid-state light emitting element comprising the light penetrating incandescent light color.
4. light-emitting device according to claim 1, is characterized in that,
Each group in above-mentioned group comprises the solid-state light emitting element penetrated respectively by the light of the colourity of at least 2 looks in redness, blueness, green.
5. light-emitting device according to any one of claim 1 to 4, is characterized in that,
Distance between the centre of luminescence of the most closely adjacent solid-state light emitting element in above-mentioned group is within 15mm, and the light beam of each above-mentioned solid-state light emitting element is 10 lumen ~ 600 lumens when 100% lights.
6. light-emitting device according to any one of claim 1 to 4, is characterized in that,
Also there is the proliferation part of the light co-diffused made from above-mentioned each group of injection,
Distance between above-mentioned each group or the three-dimensional viewpoin of light of deriving from this group are configured to around the light that makes to derive from the above-mentioned solid-state light emitting element projection section on above-mentioned proliferation part adjacent one another are or overlapping.
7. a ligthing paraphernalia, is characterized in that,
There is the light-emitting device according to any one of Claims 1-4.
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| JP2011034899A JP5842147B2 (en) | 2011-02-21 | 2011-02-21 | Light emitting device and lighting apparatus using the same |
| JP034899/2011 | 2011-02-21 |
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Also Published As
| Publication number | Publication date |
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| CN102644864A (en) | 2012-08-22 |
| JP2012174867A (en) | 2012-09-10 |
| JP5842147B2 (en) | 2016-01-13 |
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