CN204901375U - Lighting device - Google Patents
Lighting device Download PDFInfo
- Publication number
- CN204901375U CN204901375U CN201390000954.1U CN201390000954U CN204901375U CN 204901375 U CN204901375 U CN 204901375U CN 201390000954 U CN201390000954 U CN 201390000954U CN 204901375 U CN204901375 U CN 204901375U
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- Prior art keywords
- mentioned
- light
- incidence
- plane
- light guide
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
- F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
Abstract
Lighting device has: mounting substrate installs the component row that are formed by the configuration of 18 LED row forms, and the light guide plate, dispose with the mounting substrate opposition. The light guide plate possesses and has the income light portion that is listed as the incident surface of opposition with the component. Have on the incident surface and be used for the messenger to come from the anisotropic diffusion structure of incident light diffusion in the direction along the component row of 18 LED.
Description
Technical field
The utility model relates to the lighting device of the face illumination mode employing light guide plate.
Background technology
As the lighting device of face illumination mode employing light guide plate, disclose lighting device 900 (with reference to patent document 1) as shown in cross section in figure 16.Lighting device 900 is the discoid ceiling lights (sealinglight) of the type of assembling on the ceiling.Lighting device 900 has multiple light-emitting component 922 and light guide plate 940.Multiple light-emitting component 922 becomes circular to make respective main exit direction towards the state alignment of light guide plate 940.Light guide plate 940 is discoid, have by the light in part 941 formed along the part being arranged in circular light-emitting component 922 (following, by the arrangement of light-emitting component referred to as " element line "), the outside light guide section 943 being positioned at the inner side light guide section 942 inside light in part 941 and being positioned at outside light in part 941.Light in part 941 has: have the cross sectional shape of roughly V shape and the plane of incidence 941a opposed with element line and be positioned at the reflecting surface 941b of opposition side of plane of incidence 941a.The emergent light carrying out self-emission device 922 is incident to the plane of incidence 941a of light guide plate 940, is reflected at reflecting surface 941b.Reflecting surface 941b becomes the inclined-plane of V shape.Therefore, the light after the apex portion relative to V word is the slant reflection of radially inner side is directed into inner side light guide section 942, and the light after the apex portion relative to V word is the slant reflection of radial outside is directed into outside light guide section 943.Be directed into inner side light guide section 942 and the light of outside light guide section 943 as uniform illumination light from light-emitting face 942a, 943a externally outgoing.Like this, in lighting device 900, light guide plate 940 is used to realize face luminescence.
Prior art document
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2012-104476 publication
Utility model content
The problem that utility model will solve
But in above-mentioned lighting device in the past, multiple light-emitting component is configured to column-shaped, has interval in vain between adjacent light-emitting component.Therefore, the brightness of the incident light when overlooking light guide plate is along comparatively large on the direction of element line, in the position that light-emitting component exists, and less in the non-existent position of light-emitting component.And due to the restriction etc. manufactured, when microscopically observing the cross section of light guide plate, the apex portion that there is the V word of reflecting surface becomes the situation with the such curved surface of R.In this case, apex portion becomes substantially vertical relative to the main exit direction of light-emitting component, a part for the light of outgoing the not transmission in apex portion reflection in the main exit direction of light-emitting component.In view of such circumstances, when observing light guide plate from light exit direction, in the apex portion of the V word of reflecting surface, the incident light not transmission by reflecting, and wherein more in the position that light-emitting component exists on the direction of element line, and less in the non-existent position of light-emitting component.That is, in the luminaire, on the direction along the element line be made up of light-emitting component, brightness disproportionation may be produced.
The utility model is in view of above-mentioned problem, and object is to provide a kind of lighting device, uses light guide plate to realize face luminescence, and reduces brightness disproportionation.
For solving the means of problem
In order to reach above-mentioned purpose, the lighting device of a form of the present utility model, adopts following structure: this lighting device has: installation base plate, is provided with element line, this element line be multiple light-emitting component column-shaped arrange and form; And light guide plate, arranged opposite with above-mentioned installation base plate, above-mentioned light guide plate has light in part, this light in part has and arranges the opposed plane of incidence with said elements, and above-mentioned light in part has the anisotropy parameter structure that the incident light from above-mentioned multiple light-emitting component is spread on the direction of the orientation arranged along said elements.
And, in another form of the present utility model, also following structure can be adopted: the above-mentioned plane of incidence is elongate in shape long on the direction arranged along said elements, the orientation that multiple recessed face arranges at said elements exist multiple, the orientation arranged along said elements the above-mentioned plane of incidence is cut off analyse and observe observation time, each of the plurality of recessed face is made up of the 1st chamfered portion and the 2nd chamfered portion, wherein, 1st chamfered portion tilts to the 1st direction relative to above-mentioned installation base plate, 2nd chamfered portion tilts to extend from the front end of the 1st chamfered portion to 2nd direction contrary with above-mentioned 1st direction, each elongated shape of above-mentioned multiple recessed face, the length direction of each and the direction orthogonal with the orientation that said elements arranges of the plurality of recessed face are consistent.
And then, also can adopt following structure: above-mentioned anisotropy parameter structure is made up of above-mentioned multiple recessed face.
And then, also can adopt following structure: the spacing of adjacent recessed face is below the half of the length of luminescent layer on the length direction of the above-mentioned plane of incidence that each light-emitting component comprises.
And, in another form of the present utility model, also can adopt following structure: the above-mentioned plane of incidence has the planar section parallel with above-mentioned installation base plate between adjacent recessed face.
And, in another form of the present utility model, also can adopt following structure: the 1st chamfered portion and each 2nd chamfered portion are plane respectively, each 1st chamfered portion and above-mentioned installation base plate angulation and above-mentioned each 2nd chamfered portion and above-mentioned installation base plate angulation are more than 30 ° and less than 60 ° respectively.
And, in another form of the present utility model, also can adopt following structure: each of above-mentioned multiple recessed face has the cross sectional shape of V shape or U-shaped.
And then, also can adopt following structure: the end of each of above-mentioned multiple recessed face extends to the two ends of the width of the above-mentioned plane of incidence from the top that said elements arranges.
And, in another form of the present utility model, also following structure can be adopted: the above-mentioned plane of incidence is its length direction elongate in shape consistent with the direction of the orientation arranged along said elements, above-mentioned light guide plate also has light out part, this light out part has part adjacent with above-mentioned light in part on the width of the above-mentioned plane of incidence, and the exit facet had guiding the light outgoing come from above-mentioned light in part, the light in part of above-mentioned light guide plate has the above-mentioned plane of incidence by the shape gone out to above-mentioned element line thruster, and recess is formed on the face of the opposition side of this plane of incidence, become the reflecting surface of incident light to above-mentioned light out part lateral reflection with the face of the opposition side making the above-mentioned plane of incidence.
And, in another form of the present utility model, also following structure can be adopted: the above-mentioned plane of incidence is elongate in shape long on the direction of the orientation arranged along said elements, the orientation that multiple recessed face arranges at said elements exist multiple, the orientation arranged along said elements the above-mentioned plane of incidence is cut off analyse and observe observation time, each of the plurality of recessed face is made up of the 1st chamfered portion and the 2nd chamfered portion, wherein, 1st chamfered portion tilts to the 1st direction relative to above-mentioned installation base plate, 2nd chamfered portion tilts to extend from the front end of the 1st chamfered portion to 2nd direction contrary with above-mentioned 1st direction, above-mentioned anisotropy parameter structure is made up of above-mentioned multiple recessed face.
And, in another form of the present utility model, also following structure can be adopted: constructed by above-mentioned anisotropy parameter, from in the incident light of above-mentioned multiple light-emitting component, the light that spread to the direction of the orientation arranged along said elements of the above-mentioned plane of incidence by above-mentioned light guide plate, than by above-mentioned light guide plate to the above-mentioned plane of incidence to arrange the light spread in orthogonal direction many with said elements.
And, in another form of the present utility model, also can adopt following structure: said elements row are circular, and above-mentioned light guide plate is discoideus, and above-mentioned light in part is made up of the circular part of the shape arranged along said elements.
The effect of utility model
In the lighting device of a form of the present utility model, by using light guide plate, realize face luminescence.And in the luminaire, the plane of incidence of light guide plate has the anisotropy parameter structure making the incident light of self-emission device spreading on the direction of element line.Consequently, along on the direction of element line, inciding the luminous intensity distribution width after the refraction of the light of the plane of incidence from light-emitting component, becoming larger than not having when anisotropy parameter constructs.Therefore, in lighting device, can be reduced in along the brightness disproportionation on the direction of element line.
Like this, can provide and use light guide plate to realize face luminescence, and reduce the lighting device of brightness disproportionation.
Accompanying drawing explanation
Fig. 1 is the surface structure of the ligthing paraphernalia representing embodiment 1 and the figure of internal structure.
Fig. 2 is the exploded perspective view of the internal structure representing the ligthing paraphernalia shown in Fig. 1.
Fig. 3 is the partial cross section figure of the internal structure representing the ligthing paraphernalia shown in Fig. 1.
In Fig. 4, (a) is the stereogram observing the light guide plate the ligthing paraphernalia shown in Fig. 1 from plane of incidence side, and (b) is the partial enlarged drawing of (a).
In Fig. 5, (a) is the schematic section after being removed by diffusion shell from the ligthing paraphernalia shown in Fig. 1, and (b) is the partial enlarged drawing of (a).
Fig. 6 is the figure of the principle of the effect of the light guide plate represented in the ligthing paraphernalia shown in Fig. 1, and (a) is the figure of comparative example, and (b) is the figure of the ligthing paraphernalia shown in Fig. 1.
Fig. 7 is the schematic section of the ligthing paraphernalia used in simulation, and (a) represents that the medial surface of groove is the situation of plane, and (b) represents that the medial surface of groove is the situation of curved surface.
Fig. 8 is the figure of the result representing simulation, and (a) represents the situation of θ=0 °, and (b) represents the situation of θ=30 °, W1/W2=0%, and (c) represents the situation of θ=30 °, W1/W2=40%.
Fig. 9 is the figure of the result representing simulation, and (a) represents the situation of θ=45 °, W1/W2=0%, and (b) is the situation of θ=45 °, W1/W2=40%, and (c) represents the situation of θ=45 °, W1/W2=50%.
Figure 10 is the figure of the result representing simulation, and (a) represents the situation of θ=60 °, W1/W2=0%, and (b) represents the situation of θ=60 °, W1/W2=40%, and (c) represents the situation of θ=60 °, W1/W2=50%.
Figure 11 is the figure of the result representing simulation, a () represents that groove has the cross sectional shape of semiellipse shape, the situation of W1/W2=0%, b () represents that groove has the cross sectional shape of semiellipse shape, the situation of W1/W2=40%, c () represents that groove has the cross sectional shape of semicircle shape, the situation of W1/W2=0%, (d) represents that groove has the cross sectional shape of semicircle shape, the situation of W1/W2=40%.
Figure 12 is the ligthing paraphernalia and the figure of analog result of Luminance Distribution of ligthing paraphernalia not establishing groove that represent θ=45 °, W1/W2=20%, and (a) is the top view representing Luminance Distribution, and (b) is the curve representing Luminance Distribution.
Figure 13 is the ligthing paraphernalia and the figure of analog result of Illumination Distribution of ligthing paraphernalia not establishing groove that represent θ=45 °, W1/W2=20%, and (a) is the top view representing Illumination Distribution, and (b) is the curve representing Illumination Distribution.
Figure 14 is the exploded perspective view of the internal structure of the ligthing paraphernalia representing variation.
Figure 15 is the figure of the situation illustrated to the ligthing paraphernalia shown in ceiling-mounted Fig. 1.
Figure 16 is the sectional view of lighting device in the past.
Detailed description of the invention
< < embodiment > >
With reference to accompanying drawing, the ligthing paraphernalia used in the lighting device of a form of the present utility model is described.Fig. 1 is the figure of the outward appearance representing ligthing paraphernalia 1.Here, the mode utilizing LED (LightEmittingDiode) as light-emitting component is described.
1. overall structure
As shown in Figure 1, the surface structure of ligthing paraphernalia 1 is discoid, is roughly made up of pedestal 10 and diffusion shell 50.A part of incision of pedestal 10, the wiring 23 be connected with power subsystem (not shown) is externally stretched out from this notch 16.In the space surrounded by pedestal 10 and diffusion shell 50, shown in dotted line, be configured with LED installation base plate 20.LED installation base plate 20 is made up of installation base plate 21 and LED22.
2. each portion structure
Fig. 2 is the exploded perspective view of the internal structure representing ligthing paraphernalia 1.Ligthing paraphernalia 1 possesses pedestal 10, LED installation base plate 20, reflection part 30, light guide plate 40 and diffusion shell 50.
[pedestal 10]
Pedestal 10 has: main part 11, has structure at the bottom of the secondary that center side is comparatively dark, peripheral side is more shallow; With peripheral part 12, be erected on main part 11 around.Forming the material of pedestal 10 is the excellent materials of heat dissipation characteristics, such as, be the metal material of die-cast aluminum alloy material etc.
[LED installation base plate 20]
LED installation base plate 20 is placed in the first order 13 of pedestal 10.The shape forming the installation base plate of LED installation base plate 20 is circular.On the surface of installation base plate 21, such as 18 LED22 are arranged in circular (following, by the arrangement of LED22 referred to as " element line ").The insulating barrier that installation base plate 21 has such as had stacked to be made up of ceramic material, heat-conducting resin etc. and the 2 layers of structure of metal level be made up of aluminium etc.On the surface of installation base plate 21, be formed with the wiring pattern (not shown) for being electrically connected with wiring 23 by LED22.The external diameter of installation base plate 21 is such as 90mm.The surface of installation base plate 21 has reflection characteristic, effectively to make the emergent light of LED22 to light guide plate 40 lateral reflection.
The main exit direction of each LED22 is the direction vertical with the surface of installation base plate 21.In LED installation base plate 20, such as, use COB (ChiponBoard: chip on board) technology will amount to 18 LED22 and carry out relative to wiring pattern the installation that faces up.The arrangement pitch of each LED22 is certain, and this arrangement pitch is such as 17mm.
LED installation base plate 20 also has wiring 23.Wiring 23 is the wirings carrying out electric power supply from power subsystem (not shown) side direction LED22.The two ends of wiring 23 are connected to wiring pattern and the power subsystem (not shown) of installation base plate 21.
[reflection part 30]
Reflection part 30 presents discoideus, has inner reflection portion 31, recess 32 and outside reflecting part 33.The equipping position of reflection part 30 is on the surface of the LED installation base plate 20 be positioned in the first order 13 of pedestal 10.The object of configuration reflection part 30 is, by the emergent light from LED22 and the light that spills from light guide plate 40 efficiently to light guide plate 40 lateral reflection.The surface of reflection part 30 has reflection characteristic.The material forming reflection part 30 is the material with high reverse--bias characteristic, and such as high light reflectivity polybutylene terephthalate (PBT) (PBT) resin, highly reflective gather carbonic acid (PC) resin, high light reflectivity nylon resin, high light reflectivity Foamex etc.By carrying out injection moulding to these resin materials, thus reflection part 30 can be formed with high accuracy.
When overlooking reflection part 30, recess 32 makes the circular region of the certain radius in the surface of reflection part 30 recessed in a thickness direction.The region at recess 32 place is corresponding with directly over the element line in LED installation base plate 20.At recess 32, multiple opening 34 circumferentially separates certain intervals and exists.In the flat shape of opening 34, directly over the installation site of each LED22, the A/F of the orthogonal direction of element line is less, and in part in addition, the A/F of the orthogonal direction of element line is larger.But in the present embodiment, element line is circular, and the direction therefore along element line becomes circumferencial direction, the direction orthogonal with element line becomes radial.Then, the cross sectional shape of sectional view to opening 34 in the radial direction of ligthing paraphernalia 1 is used to be described.As shown in Figure 3, the medial surface of opening 34, has the ledge 34a of the part covering LED22 in its thickness direction middle position.
[light guide plate 40]
Turn back to Fig. 2, light guide plate 40 has inner side light guide section 41, light in part 42 and outside light guide section 43.The external diameter of light guide plate 40 is roughly consistent with the internal diameter of the peripheral part 12 of pedestal 10.Forming the material of light guide plate 40 is the excellent materials of light transmission, such as acrylic resin, polycarbonate resin, polystyrene resin, glass etc.By carrying out injection moulding to resin material, light guide plate 40 can be formed with high accuracy.Light guide plate 40 is positioned in the second level 14 of pedestal 10.The object of configuration light guide plate 40 is, makes the emergent light face of LED22 luminous.But ligthing paraphernalia 1 is the ligthing paraphernalia of lower photograph (downlight) mode.Therefore, multiple LED22 makes main exit direction be arranged in the opposition side of the light-emitting face of light guide plate 40 towards the light-emitting face of light guide plate 40.
Light in part 42 is made up of the circular position along element line on light guide plate 40, become as by compared with inner side light guide section 41 and outside light guide section 43 more by element line thruster go out shape.Thus, as shown in Figure 3, the cross sectional shape of light in part 42 becomes the shape of the roughly V word with certain thickness.The face opposed with element line of light in part 42 becomes the plane of incidence 44 of the light incidence from LED22.That is, the plane of incidence 44 is elongate in shape of the orientation along element line.And, becoming the reflecting surface 42c of reflected incident light with the inclined-plane of the roughly V shape of the plane of incidence 44 opposite side of light in part 42.
Reflecting surface 42c is roughly V shape, thus from the light of the plane of incidence 44 incidence compared with the apex portion 42a1 of V word more the inclined-plane of inner circumferential side side guided by light guide section 41 to the inside by the light after reflecting.And, from being guided by light guide section 43 laterally by the light after reflecting on the inclined-plane of outer peripheral side compared with the apex portion 42a1 of V word the light of the plane of incidence 44 incidence.Thereby, it is possible to the light from the plane of incidence 44 incidence to be divided into inner side light guide section 41 and outside light guide section 43.Light its part whenever repeatedly carrying out multipath reflection be divided into after inner side light guide section 41 and outside light guide section 43 is fetched to the outside of light guide plate 40.Thereby, it is possible to the face realizing ligthing paraphernalia 1 is luminous.
And as shown in Figure 3, the shape on the inclined-plane of reflecting surface 42c radially then to tilt curved more such the closer to apex portion 42a1.Therefore, even if reduce the thickness of light guide plate 40, the light from LED22 outgoing and after the transmission plane of incidence 44 is also easy in reflecting surface 42c normal reflection, easily guarantees reflection characteristic.
But, due to the reflecting surface 42c of such convex form, when the installation site of LED22 offset by, sometimes produce the problem of the brightness disproportionation of circumferencial direction.Therefore, in the present embodiment, by arranging ledge 34a at the medial surface of opening 34, brightness disproportionation is suppressed.Below, the reason of the brightness disproportionation of this circumferencial direction and the solution of brightness disproportionation are described in detail.When manufacturing LED installation base plate 20, sometimes LED22 is arranged on the position that radially offset by compared with the original design attitude on installation base plate 21 surface.Or LED installation base plate 20 and reflection part 30 configure with the relation that offset by from original opposed locations relation sometimes.Now, if there is not ledge 34a at the medial surface of opening 34, then the position that the distance apex portion 42a1 sometimes incided via the plane of incidence 44 reflecting surface 42c from the light of the end outgoing of LED22 is far away.Further, the shape on the inclined-plane of the position that the distance apex portion 42a1 in reflecting surface 42c is far away is the less curved that tilts.Therefore, this incident light diminishes to the incidence angle of reflecting surface 42c, is not easily transmitted at reflecting surface 42c by reflecting.Consequently, in ligthing paraphernalia, easily produce the brightness disproportionation of circumferencial direction.On the other hand, in ligthing paraphernalia 1, there is ledge 34a at the medial surface of opening 34.Therefore, though when LED22 radially offset compared with design attitude and mounted, hit ledge 34a and crested from the end outgoing of LED22 and towards the light of the position far away of the distance apex portion 42a1 reflecting surface 42c.Thus, in ligthing paraphernalia 1, brightness disproportionation is inhibited.
In addition, from the viewpoint that reflection characteristic improves, front end is sharp-pointed as far as possible to wish the apex portion 42a1 of the V word of reflecting surface 42c.But in fact, due to the restriction etc. manufactured, the situation that apex portion 42a1 becomes as the curved surface had R is more.Under these circumstances, at apex portion 42a1, produce the face substantially vertical relative to the main exit direction of LED22.Like this, along the part of the light of the main exit direction outgoing of LED22 in the apex portion 42a1 not transmission by reflecting.And as shown in Figure 2, apex portion 42a1 is circular to exist along element line.Therefore, the leakage of such light is more in the position that LED22 exists on the direction of element line, and less in the non-existent position of LED22.That is, when overlooking light guide plate 40, the position high along circular element line, brightness and the low position of brightness alternately occur.This brightness disproportionation in direction that will become along element line.In the present embodiment, in order to suppress the brightness disproportionation in such direction along element line, the plane of incidence 44 has the anisotropy parameter structure that the incident light from LED22 is being spread on the direction of element line.About the details that the anisotropy parameter of the plane of incidence 44 constructs, carry out later describing.
Inner side light guide section 41 is positioned in the inner reflection portion 31 of reflection part 30, guides from the face outgoing with opposition side, inner reflection portion 31 light come from light in part 42.In order to improve the uniformity of the emergent light in exit facet, also DIFFUSION TREATMENT can be implemented to the exit facet of inner side light guide section 41.And, in addition, also can be mixed into diffusible filler in the inside of inner side light guide section 41, also recess or protuberance can be set in the face of the side, inner reflection portion 31 of inner side light guide section 41.Outside light guide section 43 is positioned on the second level 14 of the outside reflecting part 33 of reflection part 30 and the pedestal 10 of pedestal 10, guides from the face outgoing with outside reflecting part 33 opposite side the light come from light in part 42.In order to improve the uniformity of the emergent light in exit facet, also DIFFUSION TREATMENT can be implemented to the exit facet of outside light guide section 43.And, in addition, diffusible filler can be mixed in the inside of outside light guide section 43, also recess, protuberance can be set on the face of outside reflecting part 33 side of outside light guide section 43.Thereby, it is possible to improve the uniformity of the face luminescence of ligthing paraphernalia 1 further.
[diffusion shell 50]
Turn back to Fig. 2, diffusion shell 50 has the sidewall portion 52 of the light exit portion 51 covering light guide plate 40 and the periphery being configured in light exit portion 51.Diffusion shell 50 to the joint of pedestal 10 be use bonding agent at the near top of peripheral part 12, seal member carries out.The object of configuration diffusion shell 50 is, by the face luminescence making the emergent light scattering from light guide plate 40 obtain uniform Luminance Distribution.The material forming diffusion shell 50 is translucent material, such as silicones, acrylic resin, polycarbonate resin, glass etc.Implement light scattering process to light exit portion 51, Row sum-equal matrix of going forward side by side is to make the emergent light scattering efficiently from light guide plate 40.As light scattering process, such as, enumerate and imperceptibly concavo-convex process is carried out to the surface of light exit portion 51.This light scattering process can be implemented the surface of light exit portion 51 and this two sides, the back side.And, also can substitute light scattering process is implemented to the light exit portion 51 be made up of translucent material or be used in translucent material together with this process be mixed with the filler spread material to form light exit portion 51.As shown in Figure 3, the sidewall portion 52 of diffusion shell 50 engages with the outer peripheral face of the peripheral part 12 of pedestal 10.
3. the anisotropy parameter structure of the plane of incidence
In light guide plate 40, as above above-mentioned, in order to suppress the brightness disproportionation in the direction along element line, the plane of incidence 44 has the anisotropy parameter structure that the incident light from LED22 is being spread on the direction of element line.Namely, constructed by anisotropy parameter, from in the incident light of multiple light-emitting component, the light that spread to the direction of the orientation along element line of the plane of incidence by light guide plate becomes many, the light spread to the direction orthogonal with the orientation of element line of the plane of incidence by light guide plate tails off.Specifically, anisotropy parameter structure is as shown in the stereogram of the light guide plate 40 of Fig. 4 (a), and the plane of incidence 44 is the structures being formed with the groove 46 that multiple radially (orthogonal direction of element line) extends in a circumferential direction.Respectively to diffusion structure also as shown in cross-section in figure 5, each groove (recessed face) 46 is made up of the 1st chamfered portion 45 and the 2nd chamfered portion 45,1st chamfered portion 45 tilts to the 1st direction relative to LED installation base plate 20, and the 2nd chamfered portion 46 tilts to the 2nd direction contrary with the 1st direction from the front end of the 1st chamfered portion 45 and extends." the 1st direction " mentioned here, refers to relative to LED installation base plate 20 direction vertically upward." the 2nd direction " refers to relative to LED installation base plate 20 direction vertically downward.Namely, the relative medial surface (the 1st chamfered portion and the 2nd chamfered portion) 45 of each groove (recessed face) 46 is the structures of the inclined plane be formed as follows, this inclined plane is, towards the depth direction inclined plane that then width of groove on the length direction of the plane of incidence 44 is narrower of groove.Groove 46 is such as formed in the position of 360 degree throughout the complete cycle of the plane of incidence 44.The medial surface 45 of groove 46 is planes, and the cross section entirety of groove 46 is in V shape.In addition, it also can be curved surface that the medial surface 45 of groove 46 is not limited to plane, and when medial surface 45 is curved surfaces, the cross section of groove 46 is as a whole in U-shaped.And each groove 46 is elongate in shape, the length direction of each groove 46 is consistent with the direction orthogonal with the orientation of element line.Be formed with such groove 46 at the plane of incidence 44, therefore when light is incident from the inside side 45 of LED22, incident light to reflect and to element line Directional Extension at medial surface 45.If luminous intensity distribution width is expanded compared with the situation that the plane of incidence is smooth, then the angle θ of the medial surface 45 of groove 46 can be arbitrary value.Therefore, in principle, as long as angle θ is larger and be less than 90 ° than 0 °.Further, when the medial surface 45 of groove 46 is planes, known by simulation described later, wish that angle θ is such as the arbitrary angle of more than 30 ° less than 60 °.
As shown in Fig. 4 (b), each groove 46 extends to the two ends in the direction orthogonal with the direction of the orientation along element line of the plane of incidence 44, therefore, it is possible to arrange the medial surface 45 of the area of maximum limit in the limited plane of incidence 44.Consequently, incident light can be made along element line Directional Extension, the brightness disproportionation in the direction along element line can be suppressed further.
The plane of incidence 44 has the plane 47 parallel with installation base plate 21 between adjacent groove 46.The light inciding plane 47 intactly passes through to the top of light guide plate 40.Thus, when overlooking light guide plate 40, even in the position existed along LED22 on the direction of element line, also can brightness be guaranteed.
And the shape of each groove 46 is roughly the same, therefore the optical characteristics entirety of the plane of incidence 44 becomes even.
In order to manufacture the light guide plate 40 plane of incidence 44 being formed with multiple groove 46, as long as such as use the mould being provided with the protuberance corresponding with groove 46, form light guide plate 40 entirety and groove 46 simultaneously.And, after defining the light guide plate before forming groove 46, such as, also can form groove 46 by cutting.
The spacing L1 of groove 46 is such as 0.7mm.LED22 comprises luminescent layer 22a and framework 22b, and length (length on the length direction of the plane of incidence of the luminescent layer) L2 in the direction along element line of luminescent layer 22a is such as 2.6mm.The plane of incidence 44 is such as 0.5mm with the beeline L3 on the surface of luminescent layer 22a.In the present embodiment, L1=is about the establishment of this relation of 0.27L2.Like this, as long as the spacing L1 of groove 46 is below the half of the length L2 in the direction along element line of luminescent layer 22a.Thus, above the luminescent layer 22a of a LED22, there is multiple groove 46, incident light can be made to expand on element line direction, the brightness disproportionation in the direction along element line can be suppressed further.
4. light guide plate is on the impact of luminous intensity distribution width
Then, the principle of Fig. 6 to the effect of the light guide plate 40 in ligthing paraphernalia 1 is utilized to be described.In the light guide plate 1040 (comparative example) shown in Fig. 6 (a), the plane of incidence 1044 is planes.In the light guide plate 40 (embodiment) shown in Fig. 6 (b), the plane of incidence 44 is formed with multiple groove 46.The 22a1 described with dotted line represents the position on the surface of luminescent layer 22a, and arbitrary on the surperficial 22a1 of luminescent layer 22a is a bit expressed as spot light P.
As shown in Fig. 6 (a), in a comparative example, incident to the plane of incidence 1044 of light guide plate 1040 from the light of light source P outgoing.The plane of incidence 1044 is parallel with the surperficial 22a1 of luminescent layer 22a.After light L15 impinges perpendicularly on the plane of incidence 1044, intactly to directly over pass through.Other light L11 ~ L14 and L16 ~ L19 passes through upward on the basis that refraction angle becomes less than incidence angle.On the other hand, as shown in Fig. 6 (b), in an embodiment, the plane of incidence 44 of light guide plate 40 is incided from the light of light source P outgoing.The plane of incidence 44 is formed with groove 46, light L1 ~ L9 incides medial surface 45.After light L5 impinges perpendicularly on the plane of incidence 44, intactly to directly over pass through.Other light L1 ~ L4 and L6 ~ L9 passes through upward on the basis that refraction angle becomes less than incidence angle.
Here, light L1 ~ L4 and L6 ~ L9 is relative to the incidence angle of medial surface 45, larger relative to the incidence angle of the plane of incidence 1044 than light L11 ~ L14 and L16 ~ L19.Which side no matter in the plane of incidence 44,1044, refraction angle is all the angle of incidence angle being multiplied by a constant.Such as, between the surperficial 22a1 and the plane of incidence 44,1044 of luminescent layer 22a, have air to exist, the refractive index of air is the refractive index of 1.0 light guide plates 40,1044 when being such as 1.5, and refraction angle is about 0.67 times of incidence angle.Therefore, the refraction angle of light L1 ~ L4 and L6 ~ L9 on the plane of incidence 44, larger than the refraction angle of light L11 ~ L14 and L16 ~ L19 on the plane of incidence 1044.Consequently, light L1 ~ L9 when employing light guide plate 40, than light L11 ~ L19 when employing light guide plate 1044, more easily expands.Consequently, about the luminous intensity distribution width from light source P, Lw40 when employing light guide plate 40 is larger than Lw1044 when employing light guide plate 1044.
5. the simulation of luminous intensity distribution
Then, make the change in shape of groove 46 and the expansion of the luminous intensity distribution width from light source is simulated.The shape of the light guide plate used in simulation is shown in Fig. 7.The medial surface of situation that the medial surface of the groove shown in Fig. 7 (a) is plane and the groove shown in Fig. 7 (b) is used to be that these two kinds of light guide plates of situation of curved surface are simulated.When the medial surface of groove is plane, angle θ and ratio W1/W2 is changed.Angle θ is medial surface 45 and installation base plate 21 angulation.Ratio W1/W2 is the ratio of width W 1 relative to the spacing W2 of adjacent groove 46 of plane 47.When the medial surface of groove is curved surface, make shape and the W1/W2 change of medial surface.3 P1, P2, P3 are respectively using a bit representing as spot light on luminescent layer 22a.In Fig. 8 ~ Figure 11, the interval of spot light P1 ~ P3, the refractive index of light guide plate 40,1040 and the distance of spot light P1 ~ P3 and light guide plate are shared respectively.Below, the result of Fig. 8 ~ Figure 11 to simulation is used to be described.
[not forming the situation of groove]
In Fig. 8 (a), by the light of the central authorities on the surface from luminescent layer 22a and these 3 outgoing of two ends, the light that relative to optical axis is the scope of ± 70 ° undertakies splitting by 1 ° and represents with straight line.The radical of light (straight line in figure) is 423.
Also be same in following Fig. 8 (b) ~ Figure 11.As shown in Fig. 8 (a), reflect from the light of light source P1 ~ P3 outgoing at the plane of incidence 1044.Luminous intensity distribution width after refraction is Lw0.
[medial surface of groove is the situation of plane]
As shown in Fig. 8 (b), Fig. 8 (c), when θ=30 °, time some in W1/W2=0%, 40%, luminous intensity distribution width is Lw1, Lw2, expands than Lw0.And the light existed in luminous intensity distribution width Lw1, Lw2 is expanded with uniform density in luminous intensity distribution width Lw1, Lw2.Therefore, can say that luminous intensity distribution is expanded equably.
As shown in Fig. 9 (a), Fig. 9 (b), Fig. 9 (c), when θ=45 °, time some in W1/W2=0%, 40%, 50%, luminous intensity distribution width is Lw4, Lw5, Lw6, expands than Lw0.And when observing the light path in luminous intensity distribution width Lw4, Lw5, Lw6, luminous intensity distribution is roughly evenly expanded.Especially, along with W1/W2 increases successively with 0%, 40%, 50%, luminous intensity distribution is close to uniform luminous intensity distribution.This is because, being arranged in the plane parallel with the surface of luminescent layer between adjacent groove, not reflecting from the light of light source P1 ~ P3 incidence and passing through upward.If W1/W2=50%, the light expanded after the medial surface incidence of groove is incident with to the plane arranged between adjacent groove and the amount of the light passed through upward is roughly the same, and therefore luminous intensity distribution is close to uniform luminous intensity distribution.
As shown in Figure 10 (a), Figure 10 (b), Figure 10 (c), when θ=60 °, time some in W1/W2=0%, 40%, 50%, luminous intensity distribution width is Lw7, Lw8, Lw9, expands than Lw0.And when observing the light path in luminous intensity distribution width Lw9, luminous intensity distribution is expanded equably.But, when using by LED chip and the LED that formed using the sealant that the resin material being mixed into fluorophor is formed as light source, from LED to directly over direction outgoing light with from LED obliquely upward to the light of outgoing, color is different.This is because, to directly over the distance passed through in sealant of the light of direction outgoing larger than the distance passed through in sealant to the light of outgoing obliquely upward, to directly over the light of direction outgoing carry out colour switching more easily by fluorophor.Therefore, such as, when using the LED by the combination outgoing white light of blue LED die and yellow fluorophor, sometimes to directly over direction outgoing white light, obliquely upward to the yellowish-white coloured light of outgoing.This irregular colour caused can improve when θ=60 °.In Fig. 10, from light source P1 ~ P3 to directly over the light of outgoing to be refracted and to tiltedly expansion at the medial surface of groove.On the other hand, advance after a medial surface of groove is refracted from light source P1 ~ P3 to the light of outgoing tiltedly, the lateral surface of adjacent groove by normal reflection upward to.These two light by colour mixture, therefore, it is possible to improve irregular colour.This irregular colour improves effect, by W1/W2=50%, 40%, the order of 0% becomes large.
[medial surface of groove is the situation of curved surface]
When as shown in Figure 11 (a), Figure 11 (b), groove has the cross sectional shape of semiellipse shape, time some in W1/W2=0%, 40%, luminous intensity distribution width is Lw10, Lw11, expands than Lw0.And when observing the light path in luminous intensity distribution width Lw10, Lw11, luminous intensity distribution is expanded equably.When as shown in Figure 11 (c), Figure 11 (d), groove has the cross sectional shape of semicircle shape, time some in W1/W2=0%, 40%, luminous intensity distribution width is Lw12, Lw13, expands than Lw0.And when observing the light path in luminous intensity distribution width Lw12, Lw13, luminous intensity distribution is expanded equably.
[summary]
Like this, groove 46 has the cross sectional shape of V shape, and when medial surface 45 and the installation base plate 21 angulation θ of groove 46 are more than 30 ° less than 60 °, compared with the situation not having groove, the luminous intensity distribution width from light source is expanded.And when groove 46 has the cross sectional shape of the U-shaped as semiellipse shape, semicircle shape, compared with the situation not having groove, the luminous intensity distribution width from light source is expanded.And, by adjusting the ratio of W1/W2 according to the shape of groove 46, luminous intensity distribution can be made close to uniform luminous intensity distribution.
6. the simulation of brightness and illumination
And then, use θ=45 °, W1/W2=20% ligthing paraphernalia 101 and do not establish the ligthing paraphernalia 1000 of groove, carry out the simulation of Luminance Distribution and Illumination Distribution.
Figure 12 represents the result of Luminance Distribution, and Figure 13 represents the result of Illumination Distribution.Ligthing paraphernalia 101, ligthing paraphernalia 1000 are all discoid, but about the analog result of the Luminance Distribution in Figure 12 (a), Figure 13 (a) and Illumination Distribution, the result of each ligthing paraphernalia 101, ligthing paraphernalia 1000 is respectively got half and merged display.In Figure 12 (a), Figure 13 (a), be all that left-half is corresponding with ligthing paraphernalia 101, right half part is corresponding with the ligthing paraphernalia 1000 of comparative example.And in Figure 12 (a), Figure 13 (a), the height of brightness and illumination represents to scheme the deep or light of shown color.The deep or light difference of color is less, and brightness disproportionation is less.
As shown in Figure 12 (a), in ligthing paraphernalia 101, compared with ligthing paraphernalia 1000, the deep or light difference of color is less, and therefore brightness disproportionation reduces.And, as shown in Figure 12 (b), the difference of the maxima and minima of the brightness of ligthing paraphernalia 1000 is less than the difference of the maxima and minima of the brightness of ligthing paraphernalia 101.According to this situation alternatively, in ligthing paraphernalia 101, compared with ligthing paraphernalia 1000, brightness disproportionation reduces.
As shown in Figure 13 (a), in ligthing paraphernalia 101, compared with ligthing paraphernalia 1000, the deep or light difference of color is less, and therefore uneven illumination reduces.And, as shown in Figure 13 (b), the difference of the maxima and minima of the illumination of ligthing paraphernalia 1000 is less than the difference of the maxima and minima of the illumination of ligthing paraphernalia 101.Can say according to this situation, in ligthing paraphernalia 101, compared with ligthing paraphernalia 1000, uneven illumination reduces.
7. effect
In ligthing paraphernalia 1, light guide plate 40 is used to realize face luminescence.And, by arranging multiple groove 46 at the plane of incidence 44 of light guide plate 40, the brightness disproportionation in the direction along element line can be reduced.
And in the flat shape of opening 34, directly over the installation site of each LED22, the A/F of the orthogonal direction of element line is less, in part in addition, the A/F of the orthogonal direction of element line is larger.Thus, from the light of each LED22 easily towards in the face opposed with element line of light guide plate 40 and part outgoing corresponding between adjacent LED22.Consequently, the brightness disproportionation in the direction along element line of ligthing paraphernalia 1 can be reduced.
But, as the ligthing paraphernalia using light guide plate to carry out face luminescence, also have the ligthing paraphernalia of edge-lit mode.In the ligthing paraphernalia of edge-lit mode, in the periphery of light guide plate, light-emitting component configures in the mode of respective main exit direction towards light guide plate.Further, in order to protect light-emitting component, at the outer peripheral edge of light guide plate assembling framework.Therefore, in the ligthing paraphernalia of edge-lit mode, covered by framework from the light of the outer peripheral edge outgoing of light guide plate, be therefore difficult to make ligthing paraphernalia whole luminescence.On the other hand, in ligthing paraphernalia 1, do not need in the outer peripheral edge of light guide plate 40 to assemble framework, therefore, it is possible to whole luminescence.
< < variation > >
Above, be illustrated based on the structure of embodiment to lighting device of the present utility model, but the utility model is not limit and above-mentioned embodiment.Such as, also can be by structure appropriately combined for the structure of the part of above-mentioned embodiment.And the material described in above-mentioned embodiment, numerical value etc. only illustrate preferred situation, are not limited thereto.Further, do not depart from technology of the present utility model thought scope scope in, suitably can be changed structure.
Below, the variation of secondary light source unit of the present utility model is described.In addition, about variation, only both differences are described, about the structure shared, use identical Reference numeral and omit the description.
1. the variation of the shape of ligthing paraphernalia
Figure 14 is the exploded perspective view of the internal structure of the ligthing paraphernalia representing variation.
Ligthing paraphernalia 401 possesses pedestal 410, LED installation base plate 420, light guide plate 440 and diffusion shell 450.LED installation base plate 420 comprises rectangular and is rectangular-shaped installation base plate 421 and 8 LED22.The shape of pedestal 410 and diffusion shell 450 is rectangular and is rectangular-shaped in the same manner as installation base plate 421.Light guide plate 440 comprises inner side light guide section 441, light in part 442 and outside light guide section 443.Light in part 442 is arranged opposite with the element line of the linearity be made up of LED22.The shape of light in part 442 is linearities corresponding to the shape of element line.From the light of light in part 442 incidence by light guide section 441 and outside light guide section 443 guide and outgoing, therefore, it is possible to realize face luminescence to the inside.The shape of ligthing paraphernalia is not limited to discoid, linearity, also can be oval plate-like, diamond shaped etc.
2. employ the lighting device of ligthing paraphernalia
The utilization example of lower illuminator to the lighting device shown in above-mentioned embodiment be embedded in ceiling is used to be described.Figure 15 represents the structure of lighting device 100 and the partial sectional view of setting example that employ ligthing paraphernalia 1.
As shown in figure 15, LED light device 100 possess ligthing paraphernalia 1, leaf-spring-like hook fixed part 3 and make the power subsystem 4 of ligthing paraphernalia 1 lighting.Ligthing paraphernalia 1 is connected with power subsystem 4 by wiring 23.Hook fixed part 3 is assemblied on the pedestal 10 of the rear side being positioned at ligthing paraphernalia 1.
When arranging lighting device 100, via the through hole 2a be arranged on ceiling 2, load power subsystem 4 at the back side 2b of ceiling 2.Ligthing paraphernalia 1 is configured in through hole 2a, receive pedestal 10.Now, hook fixed part 3 hook is made to be fixed on the periphery of through hole 2a.Lighting device 100 can be arranged at ceiling 2 thus.
3. the structure of the plane of incidence
In above-mentioned embodiment etc., on the plane of incidence of light guide plate, be formed in the groove that the direction orthogonal with element line extends.But, be not limited thereto, as long as the anisotropy parameter that incident light is spreading on the direction of element line that the plane of incidence has self-emission device in the future constructs.
Such as, also can on the plane of incidence of light guide plate, the orthogonal direction formed along element line extends and the recessed face extended along the part in the direction orthogonal with element line of the plane of incidence, instead of formation extends to the groove at the two ends in the direction orthogonal with element line of the plane of incidence.Now, as long as the 1st chamfered portion tilts to extend to the 1st direction relative to installation base plate, from the front end of the 1st chamfered portion, the 2nd chamfered portion tilts to extend to the 2nd direction relative to LED installation base plate 20.And, even if do not arrange groove, recess on the plane of incidence of light guide plate, such as also can by forming the plane of incidence as plane with anisotropy parameter material, the incident light carrying out self-emission device is in the future spreading on the direction of element line.
And, in above-mentioned embodiment etc., Existential Space between the plane of incidence and light-emitting component of light guide plate.But, be not limited thereto, the mode that also can contact with the groove of the plane of incidence with light guide plate, the proliferation part that the material different from the material of light guide plate by refractive index is formed be set.Thereby, it is possible to the brightness disproportionation that the expansion of luminous intensity distribution width is reduced along the direction of element line.
4. light guide plate
The outer surface being positioned at the opposition side of element line of light guide plate can be smooth, also can be that outer surface is provided with multiple small lens and the reflection characteristic of the light passed through in light guide plate is changed.By making the reflection characteristic of the light passed through in light guide plate change, the light guide effect of light guide plate can be improved.
5. light-emitting component
In above-mentioned embodiment etc., use LED as light-emitting component.But be not limited thereto, light-emitting component also can be such as LD (laser diode), EL element (organic electroluminescent device), incandescent lamp bulb.
6. reflection part
In above-mentioned embodiment etc., employ the reflection part being provided with recess.But, recess not necessarily, as long as configure light in part in the position corresponding with the opening of reflection part.But, by inserting light in part to recess, the lower thickness altogether of reflection part and light guide plate can be made.Therefore, it is possible to contribute to the densification of utensil.
7. lighting device
In above-mentioned embodiment etc., use lower illuminator as lighting device.But be not limited thereto, the utility model such as also can be used in the lighting device beyond the building lighting device of building lighting device, backlight etc. beyond the lower illuminator of ceiling light etc.
Description of reference numerals
1 ligthing paraphernalia
10 pedestals
20LED installation base plate
21 base main body
22 light-emitting components
30 reflection parts
40 light guide plates
Light guide section inside 41
42 light in part
Light guide section outside 43
44 planes of incidence
45 medial surfaces
46 grooves
47 planes
50 diffusion shells
51 exit portion
100 lighting devices
Claims (12)
1. a lighting device, possesses:
Installation base plate, is provided with element line, this element line be multiple light-emitting component column-shaped arrange and form; With
Light guide plate, arranged opposite with above-mentioned installation base plate,
The feature of above-mentioned lighting device is,
Above-mentioned light guide plate has light in part, and this light in part has and arranges the opposed plane of incidence with said elements,
Above-mentioned light in part has the anisotropy parameter structure that the incident light from above-mentioned multiple light-emitting component is spread on the direction of the orientation arranged along said elements.
2. lighting device according to claim 1, wherein,
The above-mentioned plane of incidence is elongate in shape long on the direction arranged along said elements,
The orientation that multiple recessed face arranges at said elements exist multiple, the orientation arranged along said elements the above-mentioned plane of incidence is cut off analyse and observe observation time, each of the plurality of recessed face is made up of the 1st chamfered portion and the 2nd chamfered portion, wherein, 1st chamfered portion tilts to the 1st direction relative to above-mentioned installation base plate, 2nd chamfered portion tilts to extend from the front end of the 1st chamfered portion to 2nd direction contrary with above-mentioned 1st direction
Each elongated shape of above-mentioned multiple recessed face, the length direction of each and the direction orthogonal with the orientation that said elements arranges of the plurality of recessed face are consistent.
3. lighting device according to claim 2, wherein,
Above-mentioned anisotropy parameter structure is made up of above-mentioned multiple recessed face.
4. lighting device according to claim 3, wherein,
The spacing of adjacent recessed face, be the length of luminescent layer on the length direction of the above-mentioned plane of incidence that each light-emitting component comprises half below.
5. lighting device according to claim 3, wherein,
The above-mentioned plane of incidence has the planar section parallel with above-mentioned installation base plate between adjacent recessed face.
6. lighting device according to claim 3, wherein,
Each 1st chamfered portion and each 2nd chamfered portion are plane respectively,
Above-mentioned each 1st chamfered portion and above-mentioned installation base plate angulation and above-mentioned each 2nd chamfered portion and above-mentioned installation base plate angulation are more than 30 ° and less than 60 ° respectively.
7. lighting device according to claim 3, wherein,
Each of above-mentioned multiple recessed face has the cross sectional shape of V shape or U-shaped.
8. lighting device according to claim 3, wherein,
The end of the length direction of each of above-mentioned multiple recessed face extends to the two ends of the width of the above-mentioned plane of incidence from the top that said elements arranges.
9. lighting device according to claim 1, wherein,
The above-mentioned plane of incidence is its length direction elongate in shape consistent with the direction of the orientation arranged along said elements,
Above-mentioned light guide plate also has light out part, and this light out part has part adjacent with above-mentioned light in part on the width of the above-mentioned plane of incidence, and has the exit facet by guiding the light outgoing come from above-mentioned light in part,
The light in part of above-mentioned light guide plate has the above-mentioned plane of incidence by the shape gone out to above-mentioned element line thruster, and with the face of this plane of incidence opposite side on be formed with recess, to make to become the reflecting surface of incident light to above-mentioned light out part lateral reflection with the face of above-mentioned plane of incidence opposite side.
10. lighting device according to claim 1, wherein,
The above-mentioned plane of incidence is elongate in shape long on the direction of the orientation arranged along said elements,
The orientation that multiple recessed face arranges at said elements exist multiple, the orientation arranged along said elements the above-mentioned plane of incidence is cut off analyse and observe observation time, each of the plurality of recessed face is made up of the 1st chamfered portion and the 2nd chamfered portion, wherein, 1st chamfered portion tilts to the 1st direction relative to above-mentioned installation base plate, 2nd chamfered portion tilts to extend from the front end of the 1st chamfered portion to 2nd direction contrary with above-mentioned 1st direction
Above-mentioned anisotropy parameter structure is made up of above-mentioned multiple recessed face.
11. lighting devices according to claim 1, wherein,
Constructed by above-mentioned anisotropy parameter, from in the incident light of above-mentioned multiple light-emitting component, the light that spread to the direction of the orientation arranged along said elements of the above-mentioned plane of incidence by above-mentioned light guide plate, more than the light spread to the direction orthogonal with the orientation that said elements arranges of the above-mentioned plane of incidence by above-mentioned light guide plate.
12. lighting devices according to claim 1, wherein,
Said elements row are circular,
Above-mentioned light guide plate is discoideus,
Above-mentioned light in part is made up of the circular part of the shape arranged along said elements.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-270694 | 2012-12-11 | ||
| JP2012270694A JP5816850B2 (en) | 2012-12-11 | 2012-12-11 | Lighting device |
| PCT/JP2013/007068 WO2014091711A1 (en) | 2012-12-11 | 2013-12-03 | Illumination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204901375U true CN204901375U (en) | 2015-12-23 |
Family
ID=50934019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201390000954.1U Expired - Fee Related CN204901375U (en) | 2012-12-11 | 2013-12-03 | Lighting device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5816850B2 (en) |
| CN (1) | CN204901375U (en) |
| DE (1) | DE112013005905T5 (en) |
| WO (1) | WO2014091711A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828923A (en) * | 2019-04-18 | 2020-10-27 | 日亚化学工业株式会社 | Light emitting device, lighting device, and optical member |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6473966B2 (en) | 2015-02-12 | 2019-02-27 | パナソニックＩｐマネジメント株式会社 | Lighting device and moving body |
| DE102016101321A1 (en) | 2015-02-12 | 2016-08-18 | Panasonic Intellectual Property Management Co., Ltd. | Lighting device, lighting system and movement object |
| JP2018088302A (en) * | 2015-03-30 | 2018-06-07 | パナソニックＩｐマネジメント株式会社 | Illumination device |
| US10119682B2 (en) * | 2016-07-05 | 2018-11-06 | Philips Lighting Holding B.V. | Luminaire having improved uniformity of output |
| JP6872865B2 (en) * | 2016-07-25 | 2021-05-19 | 株式会社イトーキ | Lighting equipment and ceiling lighting equipment |
| DE202018102168U1 (en) * | 2018-04-19 | 2019-07-22 | Zumtobel Lighting Gmbh | Flat LED light |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4172008B2 (en) * | 2002-03-27 | 2008-10-29 | 三菱電機株式会社 | Surface light source device |
| JP2004031064A (en) * | 2002-06-25 | 2004-01-29 | Kawaguchiko Seimitsu Co Ltd | Backlight device |
| JP2004319340A (en) * | 2003-04-17 | 2004-11-11 | Kawaguchiko Seimitsu Co Ltd | Backlight unit |
| JP4631628B2 (en) * | 2005-09-13 | 2011-02-16 | 日本電気株式会社 | Lighting device and display device |
| KR20070077275A (en) * | 2006-01-23 | 2007-07-26 | 삼성전자주식회사 | Light guide unit and backlight assembly having the same |
| JP2012104476A (en) * | 2010-10-12 | 2012-05-31 | Toshiba Lighting & Technology Corp | Lighting device |
-
2012
- 2012-12-11 JP JP2012270694A patent/JP5816850B2/en active Active
-
2013
- 2013-12-03 CN CN201390000954.1U patent/CN204901375U/en not_active Expired - Fee Related
- 2013-12-03 DE DE112013005905.3T patent/DE112013005905T5/en not_active Withdrawn
- 2013-12-03 WO PCT/JP2013/007068 patent/WO2014091711A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828923A (en) * | 2019-04-18 | 2020-10-27 | 日亚化学工业株式会社 | Light emitting device, lighting device, and optical member |
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| Publication number | Publication date |
|---|---|
| DE112013005905T5 (en) | 2015-09-10 |
| WO2014091711A1 (en) | 2014-06-19 |
| JP5816850B2 (en) | 2015-11-18 |
| JP2014116236A (en) | 2014-06-26 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20181203 |