CN203848204U - Light source for illumination - Google Patents
Light source for illumination Download PDFInfo
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- CN203848204U CN203848204U CN201420224559.8U CN201420224559U CN203848204U CN 203848204 U CN203848204 U CN 203848204U CN 201420224559 U CN201420224559 U CN 201420224559U CN 203848204 U CN203848204 U CN 203848204U
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- plane
- light guide
- incidence
- base station
- light
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Landscapes
- Planar Illumination Modules (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The utility model provides a light source for illumination. The light source for illumination is good in light distribution property and is good in appearance when switched on even if the light source is small in size. According to the light source for illumination (100), a light guiding component (120) is arranged above a plurality of semiconductor light-emitting components (111a); the light guiding component (120) is provided with an incident plane and an emergent plane (121d), wherein the incident plane is arranged opposite to the semiconductor light-emitting components (111a), and the emergent plane (121d) makes at least part of light entering the inside through the incident plane exit in the diagonally downward direction which is away from the upper surface (160a) of a base station (160). According to the light source for illumination (100), an inclined area (121b) is formed on the incident plane, and the inclined area (121b) is inclined relative to the upper surface (160a) in the mode of being gradually far away from the upper surface (160a) from the periphery of the upper surface (160a) towards the center.
Description
Technical field
The utility model relates to the illumination light source that utilizes the semiconductor light-emitting elements such as LED (Light Emitting Diode).
Background technology
In recent years, as the substitute of incandescent lamp bulb, utilized the illumination light source of the bulb-shaped of semiconductor light-emitting elements to popularize gradually.Such illumination light source, narrower as the illumination angle of the semiconductor light-emitting elements of light source, so compared with incandescent lamp bulb, there is the problem that light distribution characteristic is narrow.
At this, the past is improved the light distribution characteristic (patent documentation 1) of illumination light source with light guide member.Figure 14 is the sectional view that represents illumination light source in the past.In illumination light source 900, at the upper surface 960a of base station 960 via installation base plate 912 so that main exit direction state configuration upward has multiple semiconductor light-emitting elements 911a, above these semiconductor light-emitting elements 911a, dispose light guide member 920.It is near the exit facet 921d maximum height and position that this light guide member 920 has with the opposed plane of incidence 921b of semiconductor light-emitting elements 911a and the diameter that is formed at enclosed globe shade 930.As shown in light path L91, L92, be incident to the inside of light guide member 920 by plane of incidence 921b from the light of each semiconductor light-emitting elements 911a outgoing, a part for the light of incident is from exit facet 921d to the oblique below outgoing of upper surface 960a of having avoided base station 960.
From a part for the light of semiconductor light-emitting elements 911a outgoing from exit facet 921d towards oliquely downward outgoing, so the light distribution characteristic of illumination light source 900 is good.And, light from the diameter of enclosed globe shade 930 be near maximum height and position towards oliquely downward outgoing, so seem seemingly light from enclosed globe shade 930 center with radial outgoing, outward appearance when the lighting of illumination light source 900 is also fine.
Patent documentation 1: No. WO2012/176354, International Publication
But while attempting above-mentioned formation to be applied to small-sized illumination light source, the outward appearance while finding to light is sometimes also bad.
Utility model content
The utility model is In view of the foregoing made, and its object is, a kind of illumination light source is provided, even miniaturization, light distribution characteristic and the outward appearance while lighting are also all good.
In order to reach above-mentioned purpose, the illumination light source of a mode of the present utility model, multiple semiconductor light-emitting elements so that main exit direction state configuration upward in the upper surface of base station, above these semiconductor light-emitting elements, dispose light guide member, this light guide member has the plane of incidence and exit facet, this plane of incidence and these semiconductor light-emitting elements are opposed, at least a portion that this exit facet makes to be incident to inner light from this plane of incidence is towards the oblique below outgoing of upper surface of avoiding described base station, on the described plane of incidence, be formed with tilting zone, this tilting zone tilts with respect to the upper surface of described base station away from the mode of the upper surface of described base station towards center side gradually with the peripheral side of the upper surface from described base station.
Described multiple semiconductor light-emitting elements is arranged as ring-type at the upper surface of described base station along the periphery of this upper surface, and the tilting zone of the described plane of incidence is formed as ring-type along the orientation of described multiple semiconductor light-emitting elements.
On the plane of incidence of described light guide member, be formed with auxiliary incident area beyond the described tilting zone, this auxiliary incident area mode parallel with respect to the upper surface of described base station or move closer to the upper surface of described base station towards center side with the peripheral side of the upper surface from described base station tilts with respect to the upper surface of described base station.
Described light guide member also has auxiliary exit facet, and this auxiliary exit facet makes a part for the light that is incident to the described plane of incidence towards the outgoing of the side of described light guide member.
Described light guide member also has: main light guide section, has tilting zone and the described exit facet of the described plane of incidence; And auxiliary light guide section, there is auxiliary incident area and the described auxiliary exit facet of the described plane of incidence.
Described main light guide section is ring-type, and described auxiliary light guide section is configured in the ring inner side of described main light guide section.
The chamfered region of the described plane of incidence is the plane with respect to the inclination angle homogeneous of the upper surface of described base station.
The effect of utility model
The illumination light source of a mode of the present utility model, has the light guide member that is formed with exit facet, and at least a portion that this exit facet makes to be incident to inner light is towards the oblique below outgoing of upper surface of avoiding base station.Therefore, light distribution characteristic is good.
And, being formed with tilting zone at the plane of incidence of light guide member, this tilting zone tilts with respect to the upper surface of described base station away from the mode of the upper surface of described base station towards center side gradually with the peripheral side of the upper surface from base station.Therefore,, by tilting zone, can make from semiconductor light-emitting elements outgoing the light of inside that is incident to light guide member by tilting zone to the direction refraction that approaches exit facet.Therefore,, even shorter along the size of the direction of the lamp axle J of light guide member, also the light that is incident to the inside of light guide member from tilting zone can be guided to the face of penetrating.Therefore,, even miniaturization, the outward appearance while lighting is also comparatively good.
Brief description of the drawings
Fig. 1 is the stereogram that represents the illumination light source of present embodiment.
Fig. 2 be represent present embodiment illumination light source, along the facing view that cuts of the A-A line of Fig. 1.
Fig. 3 is the exploded perspective view that represents the illumination light source of present embodiment.
Fig. 4 is stereogram light guide member, that observe from top that represents present embodiment.
Fig. 5 be represent present embodiment light guide member, from the stereogram of beneath.
Fig. 6 is the sectional view of the optical characteristics of the light guide member for present embodiment is described.
Fig. 7 is the distribution curve flux figure of the light distribution characteristic for illumination light source is described.
Fig. 8 is the sectional view that represents the light guide member of variation 1.
Fig. 9 is the sectional view that represents the light guide member of variation 2.
Figure 10 is the sectional view that represents the light guide member of variation 3.
Figure 11 is the sectional view that represents the light guide member of variation 4.
Figure 12 is the exploded perspective view that represents the illumination light source of variation 5.
Figure 13 is the sectional view that represents a part for the illumination light source of variation 5.
Figure 14 is the sectional view that represents illumination light source in the past.
Symbol description
100,600 illumination light sources
111a, 611a semiconductor light-emitting elements
120,220,320,420,520,620 light guide members
121,221,321,421,521 main light guide sections
121b, 221b, 321d, 421,521 tilting zones
121d exit facet
122 auxiliary light guide sections
122a assists incident area
122c assists exit facet
160 base stations
160a upper surface
Detailed description of the invention
Referring to the illumination light source of brief description of the drawings present embodiment.
< summary forms >
Fig. 1 is the stereogram that represents the illumination light source of present embodiment.As shown in Figure 1, the illumination light source 100 of present embodiment is as the LED lamp of the substitute of incandescent lamp bulb, has the face shaping approximate with incandescent lamp bulb.
Fig. 2 be represent present embodiment illumination light source, along the facing view that cuts of the A-A line of Fig. 1.Fig. 3 is the exploded perspective view that represents the illumination light source of present embodiment.As shown in Figures 2 and 3, illumination light source 100 has illuminating module 110, light guide member 120, enclosed globe shade 130, circuit unit 140, framework 150, base station 160 and lamp holder 170 etc.
The each portion of < forms >
(illuminating module)
As shown in Figure 2, illuminating module 110 has the installation base plate 112 of for example multiple illuminating parts 111 and these illuminating parts 111 of lift-launch.
Each illuminating part 111 has the seal member 111b of semiconductor light-emitting elements 111a and this semiconductor light-emitting elements of sealing 111a.Semiconductor light-emitting elements 111a is for example that the GaN that sends blue light is LED.Seal member 111b for example forms by having sneaked into the transparent silicon resin that blue light is transformed to the fluorophor particle of sodium yellow.Each illuminating part 111 is by the white light outgoing obtaining by the colour mixture of blue light and sodium yellow.
Each semiconductor light-emitting elements 111a is arranged on installation base plate 112 towards the attitude of the top along lamp axle J with main exit direction separately.In addition, multiple semiconductor light-emitting elements 111a do not need all towards the top along lamp axle J direction, can a part install with the attitude of the direction towards with respect to the oblique inclination of lamp axle J yet.Thus, can further improve the controlled of luminous intensity distribution, obtain better luminous intensity distribution.
As shown in Figure 3, installation base plate 112 is for example toroidal, is the metal substrate being made up of resin plate and metallic plate.At the upper surface 112a of installation base plate 112, multiple illuminating parts 111 are arranged as circular along the periphery of installation base plate 112.In addition,, at the upper surface 112a of installation base plate 112, in the medial region of the ring being formed by multiple illuminating parts 111, dispose the connector 113 being electrically connected with each illuminating part 111 via wiring pattern (not shown).
(light guide member)
Light guide member 120 has following function: by by a part for the light from semiconductor light-emitting elements 111a outgoing oliquely downward and side guiding, improve the light distribution characteristic of illumination light source 100.This light guide member 120 is major parts of illumination light source 100, so details is waited until aftermentioned.
(enclosed globe shade)
As shown in Figure 2, enclosed globe shade 130 is lamp shapes of A shape, is formed with the optical diffusion film (not shown) for improving light distribution characteristic at inner surface 131.In addition, enclosed globe shade 130 is not limited to the lamp shape of A shape, can be also other shapes such as shape for lamp of G shape.
The open side end 132 of enclosed globe shade 130 is embedded in the groove between the outer side tube part 153 of framework 150 and the cylinder portion 161 of base station 160.In this groove, be filled with bonding agent (not shown), by this bonding agent, enclosed globe shade 130 is fixedly connected on framework 150 and base station 160.
(circuit unit)
As shown in Figure 3, circuit unit 140 is for lighting semiconductor light-emitting elements 111a, has circuit substrate 141, is installed on various electronic components 142,143, multiple wiring 144～147 of this circuit substrate 141.In addition, only illustrate in the drawings a part of electronic component.
Circuit unit 140 is accommodated in the inside of framework 150 with circuit substrate 141 attitude parallel with lamp axle J.Circuit substrate 141 is strip in the direction along lamp axle J, with the width of the orthogonal direction of lamp axle J along with narrowing downward and gradually.By adopting such formation, can dwindle the external diameter of framework 150, its result, also can dwindle the external diameter of illumination light source 100.
A pair of wiring 144,145 is after from the inboard cylinder portion 154 of framework 150, side opening exports to the outside of framework 150, exports to the top of base station 160 via the through hole 163 of top plate portion 162 that is arranged at base station 160.And then a pair of wiring 144,145 is via the top that is arranged near the through hole 112c central authorities of installation base plate 112 and exports to installation base plate 112.And by the connector 148 of front end and the connector 113 of illuminating module 110 that are installed on wiring 144,145 are connected, circuit unit 140 is electrically connected with illuminating module 110.
The open lower side of the wiring 146 lamp holder installation portions 152 from framework 150 exports to the outside of framework 150, is connected with the housing department 171 of lamp holder 170.In addition, the open lower side of the wiring 147 lamp holder installation portions 152 from framework 150 is drawn out to the outside of framework 150, is connected with the eyelet portion 172 of lamp holder 170.By these wirings 146,147, circuit unit 140 is electrically connected with lamp holder 170.
(framework)
Framework 150 has circuit accommodation section 151 and extends in the lower end of this circuit accommodation section 151 the lamp holder installation portion 152 arranging.Circuit accommodation section 151 has outer side tube part 153 and is disposed at the inboard cylinder portion 154 of the inside of this outer side tube part 153, holds circuit unit 140 in the inside of this inboard cylinder portion 154.Lamp holder 170 in the upper outside embedding of lamp holder installation portion 152.
The outer side tube part 153 of circuit accommodation section 151 is cylindric, and cylinder axle is consistent with lamp axle J, and internal diameter and external diameter diminish downward.The inboard cylinder portion 154 of circuit accommodation section 151 is also cylindric, and cylinder axle is consistent with lamp axle J, and internal diameter and external diameter spread all over overall constant.Outer side tube part 153 and inboard cylinder portion 154 bottom are separately connected to each other, are provided with outside the gap cylindraceous 155 of the cylinder portion 161 for inserting base station 160 between side tube part 153 and inboard cylinder portion 154.
Inboard cylinder portion 154 has and remains on the function of the circuit unit 140 that inside holds and regulation base station 160 function with respect to the position of framework 150 in lamp axle J direction.Be formed with pair of notches 156 in the upper end of inboard cylinder portion 154, embed a pair of jut 141a giving prominence to side from the upper end of circuit substrate 141 in this pair of notches 156 time, by inboard cylinder portion 154 holding circuit substrates 141.In addition,, when the upper end butt of the lower surface that the cylinder portion 161 of base station 160 is inserted to the gap 155 of outer side tube part 153 and inboard cylinder portion 154 and make top plate portion 162 and inboard cylinder portion 154, specify base station 160 position with respect to framework 150 in lamp axle J direction.
(base station)
Base station 160 has cylinder cylindraceous portion 161 and by the discoideus top plate portion 162 of the upside closure of openings of cylinder portion 161, the attitude consistent with lamp axle J with the cylinder axle of cylinder portion 161 configures.Base station 160, for as radiator performance function, is made up of high thermal conductivity material.As high thermal conductivity material, for example, can use metal material, high thermal conductivity resin material etc.Use in the situation of high thermal conductivity resin material, can sneak into the fiber with heat conductivity.Base station 160 is for example made by these materials of injection moulding.
The upper surface of top plate portion 162 becomes the upper surface 160a of base station 160, and at this upper surface, 160a is provided with illuminating module 110.In the time that the upper surface 160a of base station 160 installs illuminating module 110, the upper surface 160a of base station 160 is parallel with the upper surface 112a of the installation base plate 112 of illuminating module 110.Then, semiconductor light-emitting elements 111a becomes following state: make under main exit direction state upward, along the periphery of upper surface 160a with the circular upper surface 160a that is arranged in base station 160.
For example, by the screw 180 that has connected the through hole 123c of light guide member 120 and the through hole 112c of installation base plate 112 being screwed into the screw 164 of the upper surface 160a that is arranged at base station 160, carry out the installation of illuminating module 110 to base station 160.The upper surface 160a of base station 160 contacts with the lower surface 112b face of installation base plate 112, and the thermal capacitance of illuminating module 110 is easily conducted to base station 160.
(lamp holder)
Lamp holder 170 is parts that the lamp socket of the ligthing paraphernalia for installing from illumination light source 100 is accepted electric power, uses in the present embodiment the E17 lamp holder of Edison's type.This lamp holder 170 has the housing department 171 and the eyelet portion 172 that configure via insulation division 173, and these housing departments 171 and eyelet portion 172 146,147 are electrically connected with circuit unit 140 by connecting up respectively.
The details > of < light guide member
(summary formation)
Light guide member 120 is the opticses that are made up of translucent material.As translucent material, can enumerate resin and inorganic material.As resin, can enumerate thermoplastic resin and the heat-curing resins such as general-purpose plastics, engineering plastics, Super Engineering plastics.Specifically, can list: polycarbonate resin, acrylic resin, fluorine-containing be acrylic resin, silicon-type acrylic resin, Epocryl, polystyrene resin, AS resin acrylonitrile styrene resin, cyclic olefin polymer, methyl styrene resin, fluorenes resin, PET (PETG), polypropylene, phenolic resin, melmac, PBT (polybutylene terephthalate (PBT)), POM (polyformaldehyde), PA (polyamide), PPS (polyphenylene sulfide) etc.As inorganic material, can enumerate glass or pottery etc.
Fig. 4 is stereogram light guide member, that observe from top that represents present embodiment.Fig. 5 be represent present embodiment light guide member, from the stereogram of beneath.Fig. 6 is the sectional view of the optical characteristics of the light guide member for present embodiment is described.As shown in Fig. 4, Fig. 5 and Fig. 6, light guide member 120 has main light guide section 121, auxiliary light guide section 122 and installation portion 123.
(main light guide section)
Main light guide section 121 is from the part of the light of semiconductor light-emitting elements 111a outgoing to the position of oblique below outgoing of upper surface 160a of avoiding base station 160, to be formed as circular along the orientation of semiconductor light-emitting elements 111a for making.On this main light guide section 121, be formed with the 1st plane of incidence 121a, the 2nd plane of incidence 121b, reflecting surface 121c and exit facet 121d.
The 1st plane of incidence 121a is the annulus band shape along the orientation of semiconductor light-emitting elements 111a, opposed with the peripheral edge margin of the upper surface 112a of installation base plate 112, parallel with the upper surface 160a of base station 160 and the upper surface 112a of installation base plate 112.Giving prominence to respectively downward 4 the 1st shorter protuberances 124 and a pair of the 2nd long protuberance 125 from the 1st plane of incidence 121a.
4 the 1st protuberances 124 are all identical in the length of lamp axle J direction, separate and are uniformly-spaced configured in 4 places along the orientation of semiconductor light-emitting elements 111a.Light guide member 120 is being installed under the state of base station 160, the lower surface 124a of each the 1st protuberance 124 respectively with the upper surface 112a butt of the installation base plate 112 of illuminating module 110.Therefore, the 1st plane of incidence 121a separate the 1st protuberance 124 lamp axle J direction size distance and with the upper surface 112a keeping parallelism of installation base plate 112.Like this, light guide member 120 is positioned with respect to illuminating part 111.Thus, can make to be incident to the 1st plane of incidence 121a and the 2nd plane of incidence 121b from the light of semiconductor light-emitting elements 111a outgoing according to optical design.
A pair of the 2nd protuberance 125 is compared with the 1st protuberance 124, and the size of lamp axle J direction is longer, is arranged on across lamp axle J and symmetrical position.Be provided with and position and the corresponding pair of notches 114,115 of shape of the 2nd protuberance 125 at the periphery of installation base plate 112, light guide member 120 be installed under the state of base station 160, the bottom 125a of the 2nd protuberance 125 embeds respectively otch 114,115.Like this, light guide member 120 position that can not offset in the direction of rotation centered by lamp axle J with respect to installation base plate 112.Therefore, can make to be incident to the 1st plane of incidence 121a and the 2nd plane of incidence 121b from the light of semiconductor light-emitting elements 111a outgoing according to optical design.
The 2nd plane of incidence 121b is the annulus band shape along the orientation of semiconductor light-emitting elements 111a, is positioned at the ring inner side of the 1st plane of incidence 121a, and the outer peripheral edges of the inner peripheral of the 1st plane of incidence 121a and the 2nd plane of incidence 121b are continuous.The 2nd plane of incidence 121b and illuminating part 111 are opposed, due to the 2nd plane of incidence 121b be positioned at illuminating part 111 roughly directly over, so be mainly incident to the inside of main light guide section 121 from the 2nd plane of incidence 121b from the light of semiconductor light-emitting elements 111a outgoing.In addition, be also incident to the inside of main light guide section 121 from the 1st plane of incidence 121a from the light of semiconductor light-emitting elements 111a outgoing.
Reflecting surface 121c is the annulus band shape along the orientation of semiconductor light-emitting elements 111a, is positioned at the top of the 1st plane of incidence 121a and the 2nd plane of incidence 121b.This reflecting surface 121c moves closer to upper surface 160a with the peripheral side of the upper surface 160a from base station 160 mode towards center side tilts with respect to upper surface 160a.
Exit facet 121d is the face that forms the annulus band shape of the side (outer peripheral face) of light guide member 120, vertical with respect to the upper surface 160a of base station 160, opposed with the inner surface 131 of enclosed globe shade 130.
As shown in light path L1 in Fig. 6, from semiconductor light-emitting elements 111a outgoing the light of inside that is incident to main light guide section 121 by the 2nd plane of incidence 121b in reflecting surface 121c reflection, by exit facet 121d and towards the outside that oliquely downward shines light guide member 120.Then,, from the light guide member 120 oliquely downward light transmission enclosed globe shades 130 of outgoing of court, advance to the oblique below of the upper surface 160a that avoids base station 160.
At this, the 2nd plane of incidence 121b tilts with respect to upper surface 160a away from the mode of upper surface 160a towards center side gradually with the peripheral side of the upper surface 160a from base station 160.Therefore, from semiconductor light-emitting elements 111a to directly over the light of outgoing when the 2nd plane of incidence 121b, to the direction away from lamp axle J, approach the direction refraction as the exit facet 121d of the outer peripheral face of light guide member 120.Therefore, do not reflect with at the 2nd plane of incidence 121b and towards directly over situation compared with, can arrive exit facet 121d with shorter light path in the inside of light guide member 120.As a result, the size of the lamp axle J direction that can shorten light guide member 120 compared with the past.
In addition, except from semiconductor light-emitting elements 111a towards directly over the light of outgoing, to directly over beyond direction outgoing light also by the 2nd plane of incidence 121b to the direction refraction that approaches exit facet 121d.For example, from semiconductor light-emitting elements 111a to approaching the direction outgoing of lamp axle J and being incident to the light of the 2nd plane of incidence 121b, also by the 2nd plane of incidence 121b to the direction refraction that approaches exit facet 121d.In addition, from semiconductor light-emitting elements 111a to the direction outgoing away from lamp axle J and be incident to the light of the 2nd plane of incidence 121b, also by the 2nd plane of incidence 121b to the direction refraction that approaches exit facet 121d.
Want imitating in the situation of illumination light source 100 miniaturizations of face shaping of incandescent lamp bulb, for framework 150, must guarantee to hold in inside the volume of circuit unit 140, so be difficult to the size of the lamp axle J direction that shortens framework 150.On the other hand, for enclosed globe shade 130, owing to not being crowded especially at inner body, so easily shorten comparatively speaking the size of the lamp axle J direction of enclosed globe shade 130.Therefore,, by the situation of illumination light source 100 miniaturizations, with respect to the total length (size of the lamp axle J direction of illumination light source 100) of illumination light source 100, the ratio of the size of the lamp axle J direction of enclosed globe shade 130 easily diminishes., enclosed globe shade 130 easily becomes shorter flat pattern in lamp axle J direction.If the light guide member 920 of shape is in the past dwindled and is held in the inside of such flattened spherical cover 130, become the configuration shown in two chain-dotted lines 920 in Fig. 2.In this case, exit facet 921d is positioned at than the height and position of the diameter maximum of enclosed globe shade 130 (position shown in B) position closer to the top, so in the time that illumination light source 100 is lighted, seem near the radiating light top of enclosed globe shade 130, outward appearance is bad.
To this, in the illumination light source 100 of present embodiment, can make the size ratio of the lamp axle J direction of light guide member 120 shorten, so can make the height and position of the position of exit facet 121d and the diameter maximum of enclosed globe shade 130 coincide in the past.Therefore, in the time that illumination light source 100 is lighted, seem light seemingly from enclosed globe shade 930 center with radial outgoing, outward appearance is good.
(auxiliary light guide section)
Auxiliary light guide section 122 is for making the position towards the outgoing of the side of light guide member 120 from the part of the light of semiconductor light-emitting elements 111a outgoing.This auxiliary light guide section 122 is formed as circular along the orientation of semiconductor light-emitting elements 111a in the ring inner side of main light guide section 121, with the ring of main light guide section 121 inside partial continuous.On auxiliary light guide section 122, be formed with auxiliary plane of incidence 122a, boosting reflector 122b and auxiliary exit facet 122c.
Auxiliary plane of incidence 122a is the annulus band shape along the orientation of semiconductor light-emitting elements 111a, is positioned at the ring inner side of the 2nd plane of incidence 121b of main light guide section 121, and the outer peripheral edges of the inner peripheral of the 2nd plane of incidence 121b and auxiliary plane of incidence 122a are continuous.This auxiliary plane of incidence 122a is the plane parallel with the upper surface 160a of base station 160, opposed with illuminating part 111, is incident to the inside of auxiliary light guide section 122 from a part for the light of semiconductor light-emitting elements 111a outgoing by auxiliary plane of incidence 122a.In addition, the plane of incidence 126 of light guide member 120 forms (with reference to Fig. 6) by the 1st plane of incidence 121a, the 2nd plane of incidence 121b of main light guide section 121 and the auxiliary plane of incidence 122a of auxiliary light guide section 122.
Boosting reflector 122b is the annulus band shape along the orientation of semiconductor light-emitting elements 111a, is positioned at the top of auxiliary plane of incidence 122a.This boosting reflector 122b moves closer to upper surface 160a with the peripheral side of the upper surface 160a from base station 160 mode towards center side tilts with respect to upper surface 160a.
Auxiliary exit facet 122c is the face that forms the annulus band shape of the side of auxiliary light guide section 122, peripheral side with the upper surface 160a from base station 160 tilts with respect to upper surface 160a away from the mode of upper surface 160a gradually towards center side, opposed with the inner surface 131 of enclosed globe shade 130.
As shown in light path L2 in Fig. 6, from semiconductor light-emitting elements 111a outgoing and be incident to the light of the inside of auxiliary light guide section 122 by auxiliary plane of incidence 122a, in boosting reflector 122b reflection and shine the outside of light guide member 120 towards side by auxiliary exit facet 122c.And, advance to the side of illumination light source 100 towards the light transmission enclosed globe shade 930 of side outgoing from light guide member 120.
By so auxiliary light guide section 122 is set, can make a part for the light that should advance upward advance to side.Therefore, directly over to luminosity die down and the oblique luminosity grow at rear relatively, so can expand luminous intensity distribution angle.In addition, auxiliary plane of incidence 122a must not be the plane parallel with the upper surface 160a of base station 160, is arbitrarily with respect to the inclination of upper surface 160a.For example, can tilt with respect to upper surface 160a away from the mode of upper surface 160a gradually towards center side with the peripheral side of the upper surface 160a from base station 160, also can tilt with respect to upper surface 160a to move closer to the mode of upper surface 160a.Equally, boosting reflector 122b and auxiliary exit facet 122c are also arbitrarily with respect to the inclination of upper surface 160a.
(installation portion)
Installation portion 123 is will to have round-ended cylinder shape to be cut into the shape of half with the face that comprises an axle, have the continuous semicircular cylinder part 123a of the part of lower end of upper end and auxiliary light guide section 122 and with the continuous semi-circular plate part 123b in the lower end of this semicircular cylinder part 123a.Be provided with the through hole 123c for light guide member 120 being screwed to base station 160 at semi-circular plate part 123b.
As shown in light path L3 in Fig. 6, by not there is not the region of installation portion 123, be not incident to light guide member 120 and directly into being incident upon enclosed globe shade 130 from a part for semiconductor light-emitting elements 111a light of outgoing in the ring of auxiliary light guide section 122.
(light distribution characteristic)
Fig. 7 is the distribution curve flux figure of the light distribution characteristic for illumination light source is described.In Fig. 7, use single-point line to represent the distribution curve flux A of incandescent lamp bulb, use solid line represents the distribution curve flux B of the illumination light source 100 of present embodiment, makes the distribution curve flux C of the illumination light source 900 that dots patent documentation 1.
Evaluate light distribution characteristic based on luminous intensity distribution angle.The size of angular range of luminosity peaked over half of luminosity of illumination light source that luminous intensity distribution angle has referred to outgoing.In the case of the distribution curve flux shown in Fig. 7, be that luminosity is the size of more than 0.5 angular range.
As can be seen from Figure 7, the luminous intensity distribution angle of incandescent lamp bulb is about 285 °, and the luminous intensity distribution angle of the illumination light source 100 of present embodiment is about 290 °, and the luminous intensity distribution angle of the illumination light source 900 of patent documentation 1 is about 295 °.Like this, illumination light source 100 has and roughly equal luminous intensity distribution angle of illumination light source 900, has the luminous intensity distribution angle close with incandescent lamp bulb.Therefore, the light distribution characteristic of illumination light source 100 is good, has the light distribution characteristic approximate with incandescent lamp bulb.
The summary > of < present embodiment
The illumination light source 100 of present embodiment, so that main exit direction mode is upward configured in multiple semiconductor light-emitting elements 111a the upper surface 160a of base station 160.In addition, above semiconductor light-emitting elements 111a, dispose light guide member 120.Light guide member 120 has: the plane of incidence 126, and 111a is opposed with semiconductor light-emitting elements; And exit facet 121d, at least a portion that makes to be incident to inner light from this plane of incidence 126 is towards the oblique below outgoing of upper surface 160a of avoiding described base station 160.On the plane of incidence 126, be formed with tilting zone 121b (the 2nd plane of incidence 121b), this tilting zone 121b tilts with respect to upper surface 160a away from the mode of upper surface 160a towards center side gradually with the peripheral side of the upper surface 160a from base station 160.Therefore,, even 100 miniaturizations of the illumination light source of present embodiment, light distribution characteristic and the outward appearance while lighting are also comparatively good.
In addition, multiple semiconductor light-emitting elements 111a are arranged as ring-type at the upper surface 160a of base station 160 along the periphery of this upper surface 160a, and the tilting zone 121b of the plane of incidence 126 is formed as ring-type along the orientation of multiple semiconductor light-emitting elements 111a.By semiconductor light-emitting elements 111a and tilting zone 121b are made as to such form, can to the orthogonal 360 ° of omniranges of lamp axle J without hot spot ground emergent light.
In addition,, on the plane of incidence 126 of light guide member 120, beyond tilting zone 121b, be formed with the auxiliary incident area 122a parallel with the upper surface 160a of base station 160 (auxiliary plane of incidence 122a).Like this, the plane of incidence 126 of light guide member 120 is not to tilt with respect to upper surface 160a away from the mode of upper surface 160a gradually towards center side with the peripheral side of the upper surface 160a from base station 160 in whole region.
Light guide member 120 also has auxiliary exit facet 122c, is incident to the part of light for the plane of incidence 126 towards the outgoing of the side of light guide member 120.Have in the situation of so auxiliary exit facet 122c, the light distribution characteristic of illumination light source 100 is better.
Light guide member 120 has: main light guide section 121, has tilting zone 121b and the exit facet 121d of the plane of incidence 126; And auxiliary light guide section 122, there is auxiliary incident area 122a and the auxiliary exit facet 122c of the plane of incidence 126.By auxiliary exit facet 122c is set at auxiliary light guide section 122, can effectively utilize the light that is not incident to the inside of main light guide section 121 from tilting zone 121b.
Main light guide section 121 is ring-type, and auxiliary light guide section 122 is configured in the ring inner side of main light guide section 121.By adopting such formation, can effectively utilize the light of outgoing in the ring of main light guide section 121.
The chamfered region 121b of the plane of incidence 126 is the planes with respect to the inclination angle homogeneous of the upper surface 160a of base station 160.By adopting such formation, the simple shape of light guide member 120.
" variation "
The illumination light source of embodiment has more than been described, but illustrative illumination light source 100 also can be out of shape as follows.
The variation > of < light guide member
The variation of the light guide member 120 of above-mentioned embodiment is below described.In addition, for the formation common with light guide member 120, give the symbol identical with light guide member 120 explanation simple or that omit this formation.
(variation 1)
In the light guide member 120 of above-mentioned embodiment, the 2nd plane of incidence 121b is homogeneous with respect to the inclination angle of the upper surface 160a of base station 160, but the 2nd plane of incidence of light guide member is not limited to such formation.
Fig. 8 is the sectional view that represents the light guide member of variation 1.As shown in Figure 8, in the light guide member 220 of variation 1, the 2nd plane of incidence 221b of main light guide section 221 is made up of the region of 2 kinds of different inclination angle.Specifically, the 2nd plane of incidence 221b is made up of the 1st region 221ba and the 2nd region 221bb.The 1st region 221ba and the 1st plane of incidence 121a are continuous.The 2nd region 221bb and the 1st region 221ba are continuous, and inclination angle is larger compared with the 1st region 221ba, also continuous with auxiliary plane of incidence 122a.Adopt in the situation of such formation, light distribution characteristic and the outward appearance while lighting are also comparatively good, and can carry out more complicated optical design.
In addition, the 2nd plane of incidence 221b of the light guide member 220 of variation 1 also can be as shown in double dot dash line in Fig. 8, and the 1st region 221ba continuous with the 1st plane of incidence 121a is compared with the 2nd region 221bb continuous with auxiliary plane of incidence 122a, and inclination angle is larger.
(variation 2)
Next, in the light guide member 120 of above-mentioned embodiment, the 2nd plane of incidence 121b is plane, but the 2nd plane of incidence of light guide member is not limited to such formation.
Fig. 9 is the sectional view that represents the light guide member of variation 2.As shown in Figure 9, in the light guide member 320 of variation 2, the 2nd plane of incidence 321b of main light guide section 321 is curved surfaces.Specifically, cut off in the truncation surface of light guide member 320 in the imaginary plane with comprising lamp axle J, the shape of the 2nd plane of incidence 321b is protrude to lamp axle J side circular-arc.More particularly, the circular arc of the 2nd plane of incidence 321b in above-mentioned truncation surface be shaped as oval arcuation.Adopt in the situation of such formation, light distribution characteristic and the outward appearance while lighting are also comparatively good, and can be by the light that is incident to the 2nd plane of incidence 321b to specific direction optically focused.
In addition, it is circular-arc that the shape of the 2nd plane of incidence 321b of light guide member 320 is protruded to lamp axle J side in being not limited in above-mentioned truncation surface, also can be as shown in double dot dash line in Fig. 9, and be protrude to the opposition side of lamp axle J circular-arc.
(variation 3)
Next, in the light guide member 120 of above-mentioned embodiment, parallel as the upper surface 160a of the 1st plane of incidence 121a of the part of the plane of incidence and auxiliary plane of incidence 122a and base station 160 (Fig. 2 with reference to), and different respectively with inclination angle between the 2nd plane of incidence 121b, but be not limited to this.
Figure 10 is the sectional view that represents the light guide member of variation 3.As shown in figure 10, the plane of incidence 426 of the light guide member 420 of variation 3 is made up of the plane of incidence 421b of main light guide section 421 and the plane of incidence 422a of auxiliary light guide section 422.The plane of incidence 421b of main light guide section 421 is equivalent to the 2nd plane of incidence 121b of above-mentioned embodiment, does not have the face that is equivalent to the 1st plane of incidence 121a.In addition,, in light guide member 420, do not exist yet and be equivalent to the 1st protuberance 124 of light guide member 120 and the position of the 2nd protuberance 125.
The whole region of the plane of incidence 426 with the peripheral side of the upper surface 160a (with reference to Fig. 2) from base station 160 towards center side gradually away from the mode of upper surface 160a, tilt with respect to upper surface 160a with certain inclination angle.Adopt in the situation of such formation, light distribution characteristic and the outward appearance while lighting are all comparatively good, and can make the simple shape of light guide member 120.
(variation 4)
Next, the light guide member 120 of above-mentioned embodiment has auxiliary light guide section 122, but light guide member is not to have auxiliary light guide section.
Figure 11 is the sectional view that represents the light guide member of variation 4.As shown in figure 11, the light guide member 520 of variation 4 is made up of main light guide section the 521, the 1st protuberance 124 and the 2nd protuberance 125, does not have the part that is equivalent to auxiliary light guide section 122 and installation portion 123.
Main light guide section 521 is made up of the 1st plane of incidence 121a, the 2nd plane of incidence 521b, reflecting surface 521c and exit facet 121d, and the plane of incidence 526 of light guide member 520 is made up of the 1st plane of incidence 121a and the 2nd plane of incidence 521b.The 2nd plane of incidence 521b and reflecting surface 521c are continuous in inner peripheral side.Adopt in the situation of such formation, light distribution characteristic and the outward appearance while lighting are all comparatively good, and directly over can strengthening to luminosity.
The variation > of < illumination light source
The variation of the illumination light source 100 of above-mentioned embodiment is below described.In addition, for the formation common with illumination light source 100, give the symbol identical with illumination light source 100, and explanation simple or that omit this formation.
(variation 5)
Next, in the illumination light source 100 of above-mentioned embodiment, multiple semiconductor light-emitting elements 111a are arranged as ring-type at the upper surface 160a of base station 160 along the periphery of this upper surface 160a, but illumination light source is not limited to this formation.
Figure 12 is the exploded perspective view that represents the illumination light source of variation 5.Figure 13 is the sectional view that represents the light guide member of variation 5.As shown in FIG. 12 and 13, the illumination light source 600 of variation 5 has illuminating module 610, light guide member 620, enclosed globe shade 130, circuit unit 140, framework 150, base station 160 and lamp holder 170 etc.
As shown in figure 13, illuminating module 610 for example has the installation base plate 612 that 1 illuminating part 611 and this illuminating part 111 carry.
Illuminating part 611 has 1 seal member 611b of multiple semiconductor light-emitting elements 611a and these semiconductor light-emitting elements of sealing 611a.Semiconductor light-emitting elements 611a is for example the LED that sends the GaN system of blue light.Seal member 611b for example forms by having sneaked into the transparent silicon resin that blue light is transformed to the fluorophor particle of sodium yellow.Illuminating part 611 penetrates the white light obtaining by the colour mixture of blue light and sodium yellow.
Multiple semiconductor light-emitting elements 611a are in the upper surface 612a of installation base plate 612 planar configuration for for example rectangular, and each semiconductor light-emitting elements 611a is arranged on installation base plate 612 towards the attitude of the top along lamp axle J with main exit direction separately.In addition, multiple semiconductor light-emitting elements 611a must, all towards the top along lamp axle J direction, also can a part install with the attitude towards the direction tilting with respect to lamp axle J.Thus, can further improve the controlled of luminous intensity distribution, obtain better light distribution characteristic.
Seal member 611b is for example block, by whole semiconductor light-emitting elements 611a sealings.Seal member 611b is square while observation from top, and lamp axle J intersects with this foursquare center.By adopting such formation, can spread all over the all-round luminous intensity distribution that obtains homogeneous centered by lamp axle J.
As shown in figure 12, installation base plate 612 is for example toroidal, is the metal substrate being made up of resin plate and metallic plate.Substantial middle at the upper surface 612a of installation base plate 612 is installed with block illuminating part 611.In addition,, in the peripheral edge margin of the upper surface 612a of installation base plate 612, dispose the connector 613 being electrically connected with illuminating part 611 via wiring pattern (not shown).Illuminating module 610, under the state that the lower surface 612b of installation base plate 612 and the upper surface 160a face of base station 160 are contacted, is screwed into the screw 680 of the through hole 612c that has connected installation base plate 612 screw 164 and is fixed on base station 160.
As shown in figure 13, light guide member 620 is columned light guide section 621 by outward appearance and forms at the installation portion 623 that the downside of this light guide section 621 extends the tubular arranging.
Light guide section 621 be for make from semiconductor light-emitting elements 611a upward the part of the light of outgoing from the inside of light guide member 620 to the position of oblique below outgoing of upper surface 160a of avoiding base station 160, there is the cavity 627 of truncated cone shape in lower face side.On this light guide section 621, be formed with the 1st plane of incidence 621a, the 2nd plane of incidence 621b, reflecting surface 621c and exit facet 621d.The plane of incidence 626 of light guide member 620 is made up of the 1st plane of incidence 621a and the 2nd plane of incidence 621b.
The 1st plane of incidence 621a is the circular face that forms the upper surface in the cavity 627 of truncated cone shape, opposed with the middle section of illuminating part 611, parallel with the upper surface 160a of base station 160.
The 2nd plane of incidence 621b is circular around the 1st plane of incidence 621a, and the inner peripheral of the outer peripheral edges of the 1st plane of incidence 621a and the 2nd plane of incidence 621b is continuous.The outer peripheral edge region of the 2nd plane of incidence 621b and illuminating part 611 is opposed, is incident to the inside of light guide section 621 from a part for the light of semiconductor light-emitting elements 611a outgoing by the 2nd plane of incidence 621b.In addition, be also incident to the inside of light guide section 621 from the 1st plane of incidence 621a from the light of semiconductor light-emitting elements 611a outgoing.
The 2nd plane of incidence 621b tilts with respect to upper surface 160a away from the mode of upper surface 160a towards center side gradually with the peripheral side of the upper surface 160a from base station 160.Therefore, from semiconductor light-emitting elements 611a towards directly over the light of outgoing when the 2nd plane of incidence 621b, to the direction away from lamp axle J, approach the direction refraction as the exit facet 621d of the side of light guide member 620.Therefore, with not in the 2nd plane of incidence 621b refraction and towards directly over situation compared with, can arrive exit facet 621d with shorter light path in the inside of light guide member 620.As a result, can make the size of lamp axle J direction of light guide member 620 shorter than in the past.
Reflecting surface 621c is the circular plane parallel with the upper surface 160a of base station 160, is made up of the upper surface of light guide member 620, is positioned at the top of the 1st plane of incidence 621a and the 2nd plane of incidence 621b, opposed with the inner surface 131 of enclosed globe shade 130.
Exit facet 621d is the face that forms the annulus band shape of the side (outer peripheral face) of light guide member 620, vertical with respect to the upper surface 160a of base station 160, opposed with the inner surface 131 of enclosed globe shade 130.
As shown in light path L4 in Figure 13, be incident to the inside of light guide section 621 by the 2nd plane of incidence 621b from a part for the light of semiconductor light-emitting elements 611a outgoing, after reflecting surface 621c reflection, by exit facet 621d, court oliquely downward shines the outside of light guide section 621.Then, the light transmission enclosed globe shade 130 from light guide section 621 towards oliquely downward outgoing and advancing to the oblique below of the upper surface 160a that avoids base station 160.
In addition,, as shown in light path L5, be incident to the 1st plane of incidence 621a from another part of the light of semiconductor light-emitting elements 611a outgoing.The 1st plane of incidence 621a is parallel with the upper surface 160a of base station 160, so be incident to the light of inside of light guide section 621 from the 1st plane of incidence 621a with respect to vertically incident of reflecting surface 621c, by reflecting surface 621c, do not shine upward the outside of light guide section 621 in reflecting surface 621c reflection.
Installation portion 623 is tubular, and the outer peripheral face of installation portion 623 becomes concordant face with the outer peripheral face of light guide section 621, and in the cylinder of installation portion 623, the cavity 627 of space and main part 621 is continuous.This installation portion 623 is the parts for light guide member 620 is fixed to the installation base plate 112 of illuminating module 110 and locates with respect to illuminating part 111, the upper surface 112a butt of lower surface and installation base plate 112.
In the illumination light source 600 of present embodiment, the 2nd plane of incidence 621b also tilts with respect to upper surface 160a away from the mode of upper surface 160a towards center side gradually with the peripheral side of the upper surface 160a from base station 160.Therefore,, even miniaturization, light distribution characteristic and the outward appearance while lighting are also all good.In addition, in illumination light source 600, the 1st plane of incidence 621a of light guide section 621 is optional, also can not form the 1st plane of incidence 621a, is replaced in this, and the 2nd plane of incidence 621b is taper seat.
Other variation of < >
Based on above-mentioned embodiment, the utility model has been described above, but the utility model is not limited to the formation of above-mentioned embodiment.For example, can be also that the part of above-mentioned embodiment and variation is formed to the appropriately combined illumination light source forming.In addition, material, the resin etc. that above-mentioned embodiment is recorded only shows preferred example, is not limited to this.And then, not departing from the scope of technological thought of the present utility model, the formation of illumination light source suitably can be changed.
In the above-described embodiment, semiconductor light-emitting elements is LED, and illuminating module is LED module, but semiconductor light-emitting elements can be also for example LD (laser diode) or EL element (electroluminescent cell).
The semiconductor light-emitting elements use COB technology of above-mentioned embodiment is installed to the upper surface of installation base plate, but the utility model is not limited to this formation.The semiconductor light-emitting elements of SMD (Surface Mount Device) type for example, also can be installed.
The illuminating part of above-mentioned embodiment, uses blue led as semiconductor light-emitting elements, use the fluorophor particle that blue light is transformed to sodium yellow, but the utility model is not limited to this formation as fluorophor particle.For example, can be also to send the illuminating part of ultraviolet semiconductor light-emitting elements and the luminous fluorophor particle combination of all kinds for three primary colors (red, green, blueness).
The lamp holder of above-mentioned embodiment is the E type of Edison's type, but the utility model is not limited to this formation.It can be also for example the lamp holder of pin type (specifically, the G such as GY, GX type).
The circuit unit of above-mentioned embodiment is generally housed in the inside of framework, but the utility model is not limited to this formation.For example, can be also the inside that the part of circuit unit is contained in enclosed globe shade.In addition, the circuit unit of present embodiment is contained in the inside of framework with the circuit substrate attitude parallel with lamp axle J, but circuit substrate can be also the attitude orthogonal with lamp axle J.
The utility model can extensively utilize in illumination.
Claims (12)
1. an illumination light source, is characterized in that,
Multiple semiconductor light-emitting elements are so that main exit direction state configuration upward, in the upper surface of base station, disposes light guide member above these semiconductor light-emitting elements,
This light guide member has the plane of incidence and exit facet, and this plane of incidence and these semiconductor light-emitting elements are opposed, and at least a portion that this exit facet makes to be incident to inner light from this plane of incidence is towards the oblique below outgoing of upper surface of avoiding described base station,
On the described plane of incidence, be formed with tilting zone, this tilting zone tilts with respect to the upper surface of described base station away from the mode of the upper surface of described base station towards center side gradually with the peripheral side of the upper surface from described base station.
2. illumination light source as claimed in claim 1, is characterized in that,
Described multiple semiconductor light-emitting elements is arranged as ring-type at the upper surface of described base station along the periphery of this upper surface, and the tilting zone of the described plane of incidence is formed as ring-type along the orientation of described multiple semiconductor light-emitting elements.
3. illumination light source as claimed in claim 1 or 2, is characterized in that,
On the plane of incidence of described light guide member, be formed with auxiliary incident area beyond the described tilting zone, this auxiliary incident area mode parallel with respect to the upper surface of described base station or move closer to the upper surface of described base station towards center side with the peripheral side of the upper surface from described base station tilts with respect to the upper surface of described base station.
4. illumination light source as claimed in claim 3, is characterized in that,
Described light guide member also has auxiliary exit facet, and this auxiliary exit facet makes a part for the light that is incident to the described plane of incidence towards the outgoing of the side of described light guide member.
5. illumination light source as claimed in claim 4, is characterized in that,
Described light guide member also has: main light guide section, has tilting zone and the described exit facet of the described plane of incidence; And auxiliary light guide section, there is auxiliary incident area and the described auxiliary exit facet of the described plane of incidence.
6. illumination light source as claimed in claim 5, is characterized in that,
Described main light guide section is ring-type, and described auxiliary light guide section is configured in the ring inner side of described main light guide section.
7. illumination light source as claimed in claim 6, is characterized in that,
The chamfered region of the described plane of incidence is the plane with respect to the inclination angle homogeneous of the upper surface of described base station.
8. illumination light source as claimed in claim 1 or 2, is characterized in that,
Described light guide member also has auxiliary exit facet, and this auxiliary exit facet makes a part for the light that is incident to the described plane of incidence towards the outgoing of the side of described light guide member.
9. illumination light source as claimed in claim 8, is characterized in that,
Described light guide member also has: main light guide section, has tilting zone and the described exit facet of the described plane of incidence; And auxiliary light guide section, there is auxiliary incident area and the described auxiliary exit facet of the described plane of incidence.
10. illumination light source as claimed in claim 9, is characterized in that,
Described main light guide section is ring-type, and described auxiliary light guide section is configured in the ring inner side of described main light guide section.
11. illumination light sources as claimed in claim 10, is characterized in that,
The chamfered region of the described plane of incidence is the plane with respect to the inclination angle homogeneous of the upper surface of described base station.
12. illumination light sources as claimed in claim 1 or 2, is characterized in that,
The chamfered region of the described plane of incidence is the plane with respect to the inclination angle homogeneous of the upper surface of described base station.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-124608 | 2013-06-13 | ||
| JP2013124608A JP6260849B2 (en) | 2013-06-13 | 2013-06-13 | Light source for illumination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203848204U true CN203848204U (en) | 2014-09-24 |
Family
ID=51561216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420224559.8U Expired - Lifetime CN203848204U (en) | 2013-06-13 | 2014-05-04 | Light source for illumination |
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| Country | Link |
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| JP (1) | JP6260849B2 (en) |
| CN (1) | CN203848204U (en) |
Families Citing this family (3)
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|---|---|---|---|---|
| JP6226633B2 (en) * | 2013-08-21 | 2017-11-08 | 三菱電機株式会社 | Lighting lamp and lighting device |
| JP6886340B2 (en) * | 2017-05-09 | 2021-06-16 | シチズン時計株式会社 | Lens and lighting device equipped with it |
| JP7402407B2 (en) | 2019-04-18 | 2023-12-21 | 日亜化学工業株式会社 | Light emitting devices, lighting devices and optical components |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5656461B2 (en) * | 2010-06-14 | 2015-01-21 | 日東光学株式会社 | Light emitting device |
| JP5178930B1 (en) * | 2011-03-11 | 2013-04-10 | 株式会社東芝 | Lighting device |
| TWI414727B (en) * | 2011-06-03 | 2013-11-11 | Aether Systems Inc | Light emitting device |
-
2013
- 2013-06-13 JP JP2013124608A patent/JP6260849B2/en active Active
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| JP6260849B2 (en) | 2018-01-17 |
| JP2015002018A (en) | 2015-01-05 |
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