CN104048226A - Lighting device - Google Patents

Lighting device Download PDF

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Publication number
CN104048226A
CN104048226A CN201310418401.4A CN201310418401A CN104048226A CN 104048226 A CN104048226 A CN 104048226A CN 201310418401 A CN201310418401 A CN 201310418401A CN 104048226 A CN104048226 A CN 104048226A
Authority
CN
China
Prior art keywords
lgp
light
slot part
lighting device
emitting component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310418401.4A
Other languages
Chinese (zh)
Inventor
佐佐木淳
川越真
鎌田康広
冈田康秀
岩田文重
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Lighting and Technology Corp
Original Assignee
Toshiba Lighting and Technology Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Lighting and Technology Corp filed Critical Toshiba Lighting and Technology Corp
Publication of CN104048226A publication Critical patent/CN104048226A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/66—Details of globes or covers forming part of the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/68—Details of reflectors forming part of the light source
    • 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
    • G02B6/0021—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 for housing at least a part of the light source, e.g. by forming holes or recesses
    • 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
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
    • 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
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0095—Light guides as housings, housing portions, shelves, doors, tiles, windows, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
    • 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]

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention provides a light device capable of light the surrounding. The device (10) comprises a light guiding plate (15) and a light emitting element (35). The light guiding plate (15) comprises a surface part (25), a back part (26) as an opposite side relative to the surface part (25), and a groove part (29) arranged on one side of the back part (26). The light emitting element (35) is configured in the groove part (29) of the light guiding plate (15).

Description

Lighting device
Technical field
Embodiments of the present invention relate to a kind of use the lighting device of LGP.
Background technology
In the past, have the direct mount type lighting device of a kind of ceiling, it is by making the light of light-emitting component be incident to LGP and making the surface element outgoing of light from this LGP, and improves as the surface element of LGP, the i.e. uniformity of light-emitting area.
LGP is formed as tetragonal tabular, and subtend is in the end face of this LGP and dispose light-emitting component.Light-emitting component is arranged on substrate, and this substrate can be arranged on metal framework processed with heat conduction, and this metal framework processed covers and support the periphery of LGP.
Prior art document
Patent documentation
Patent documentation 1: Japanese Patent Laid-Open 2012-109055 communique
But, use has the lighting device of LGP to be: configure light-emitting component by subtend in the end face of LGP, in order to utilize the metal framework processed periphery of covering luminous element and LGP in the lump, therefore, outgoing to the light of lighting space only from the surface element of LGP and only outgoing downwards, the surrounding of lighting device is dimmed, easily allows people produce sense of discomfort.
Summary of the invention
Problem to be solved by this invention is: the lighting device brightening around a kind of making is provided.
The lighting device of embodiment comprises: LGP and light-emitting component.LGP comprises: surface element; Back part is opposition side with respect to surface element; And slot part, be arranged on back part side.Light-emitting component is configured in the slot part of LGP.
The effect of invention
According to the present invention, by configure light-emitting component in the slot part of back part side that is arranged at LGP, and the light that makes to be incident to LGP from light-emitting component is also from the end face portion outgoing of LGP, thereby can expect to make the surrounding of lighting device to brighten.
Brief description of the drawings
Fig. 1 is the sectional view that represents the LGP of the lighting device of the 1st embodiment.
Fig. 2 is the sectional view of described lighting device.
Fig. 3 is the sectional view that represents the LGP of the lighting device of the 2nd embodiment.
Fig. 4 (a), Fig. 4 (b) are the Illumination Distribution figure that represents the light-emitting area of described LGP, Fig. 4 (a) is the Illumination Distribution figure that has the light-emitting area in the situation of reflecting plate, and Fig. 4 (b) is the Illumination Distribution figure of the light-emitting area in the situation of areflexia plate.
Fig. 5 is the sectional view that represents the LGP of the lighting device of the 3rd embodiment.
Fig. 6 is the sectional view that represents the LGP of the lighting device of the 4th embodiment.
Fig. 7 is the sectional view that represents the LGP of the lighting device of the 5th embodiment.
Fig. 8 is the sectional view that represents the LGP of the lighting device of the 6th embodiment.
Fig. 9 is the sectional view that represents the LGP of the lighting device of the 7th embodiment.
Reference numeral:
10: lighting device
11: ceiling surface
12: furred ceiling body
13: adapter
14: base plate
15: LGP
16: luminescence unit
17: lamp circuit
20: face is installed
21: side surface part
22: adapter guiding element
25: surface element
26: back part
27: end face portion
28: light-emitting area
29: slot part
30: the plane of incidence
31: light guide section
32,44: diffusion facilities
33: light emitting module
34: framework
35: light-emitting component
35a: illuminating part
36: substrate
40: reflecting device
41: reflecting plate
47: absorption equipment
A: open-wire line
Detailed description of the invention
Below, with reference to Fig. 1 and Fig. 2, the 1st embodiment is described.
As shown in Figure 2, lighting device 10 is to be shaped as circular or the direct mount type ligthing paraphernalia of tetragonal ceiling around, is installed on the furred ceiling body (suspended ceiling body) 12 that is arranged on ceiling surface 11 via adapter (adapter) 13.
Lighting device 10 comprises: as the base plate (chassis) 14 of appliance body; LGP 15, is arranged on the lower surface of this base plate 14; Luminescence unit 16, is configured in LGP 15; And lamp circuit 17, be configured in base plate 14.
Base plate 14 is for example metal system, is formed with for the installation face 20 that LGP 15 is installed at lower surface, and side surface part 21 is holded up from the surrounding of this installation face 20.Upper face center portion at base plate 14 is provided with: the adapter guiding element (adapter guide) 22 that is arranged on adapter 13.
As shown in Figure 1, LGP 15 is by high materials of transmissivity such as such as acrylic resins (acrylic resin), and is formed as circular or tetragonal tabular, comprising: surface element 25, as a first type surface, be lower surface; Back part 26, for becoming the upper surface of opposition side with respect to this surface element 25; And end face portion 27, as side.End face portion 27 is formed as: the flexure plane from surface element 25 to back part 26 bendings.Surface element 25 and end face portion 27 are configured to: light is from the light-emitting area 28 of LGP 15 outgoing.
Near the periphery of the back part 26 of LGP 15, be formed with the slot part 29 of storage configuration luminescence unit 16.With the inner surface of the slot part 29 of the center side subtend of LGP 15, be formed with respect to surface element 25 and back part 26 and the plane of incidence 30 being formed generally perpendicularly.That portion 25 is formed as parallel plane surfacewise with the inner surface of the slot part 29 of surface element 25 subtends, with the inner surface of the slot part 29 of end face portion 27 subtends are the flexure planes that are formed as along end face portion 27.In addition, be arranged on LGP 15 back part 26 sides slot part 29 no matter the outer shape of LGP 15 (circular, quadrangle) how, also can all be formed as for example quadrangle groove shape, be shaped as in circular situation etc. at the outer of LGP 15, also can be matched with outer shape and be formed as circular trough shape.
In surface element 25 sides of more leaning on LGP 15 than the slot part of LGP 15 29, be provided with the light guide section 31 of the end face portion 27 that is connected in LGP 15.
Surface element 25 and end face portion 27 at LGP 15 are provided with: the diffusion facilities 32 that makes light diffusion.Diffusion facilities 32 also for example can use: the surface element 25 to LGP 15 and the outer surface of end face portion 27 are implemented DIFFUSION TREATMENT or attaching diffusion sheet material (sheet) or configuration diffuser plate etc. and formed arbitrarily.
Also can reflecting device be set in the back part of LGP 15 26.This reflecting device for example can use reflective sheet or reflecting plate, also the installation face 20 of the base plate 14 of the rear side of installation LGP 15 can be also used as to this reflecting device.
In addition, luminescence unit 16 comprises: the light emitting module 33 and framework (frame) 34 of this light emitting module 33 is installed, and luminescence unit 16 is along the slot part 29 storage configurations of LGP 15.
Light emitting module 33 comprises: multiple light-emitting components 35; And substrate 36, multiple light-emitting components 35 are installed.Light-emitting component 35 uses surface mount device (Surface Mount Device, SMD) packaged type (package type) light emitting diode (Light Emitting Diode, the LED) element of for example surface installing type.This Surface fitting device package is: configuration light emitting diode bare chip (bare chip) in housing (case), and utilizing the sealing resin that contains fluorophor to seal, the surface of sealing resin is configured to the illuminating part 35a of emergent light.In addition, as light-emitting component 35, it is homochromy can using illuminant colour, also can use illuminant colour difference person maybe can make illuminant colour change, or also can use other light-emitting components such as for example electroluminescent (Electroluminescence, EL) element.In addition, substrate 36 slenderly forms in the mode being accommodated in the slot part 29 of LGP 15, is arranged with into multiple light-emitting components 35 of 1 row or multirow along the length direction of this substrate.
Framework 34 is for example the metal system of aluminium (aluminium) etc., slenderly forms, and install with the state of thermally coupled substrate 36 along its length in the mode being accommodated in the slot part 29 of LGP 15.Framework 34 is installed with the thermally coupled state in base plate 14.
Luminescence unit 16 is: in the slot part 29 of LGP 15, configure in the mode of the plane of incidence 30 subtends in illuminating part 35a and the slot part 29 of light-emitting component 35.And then the illuminating part 35a that is configured in the light-emitting component 35 of the part of the slot part 29 of the subtend of LGP 15 is mutual subtend.
In addition, the power supply input side of lamp circuit 17 is connected in commercial ac power source by adapter 13 and furred ceiling body 12, and the outlet side of lighting a lamp of lamp circuit 17 is connected in multiple light-emitting components 35 by the substrate 36 of light emitting module 33.By lamp circuit 17, alternating electromotive force is converted to specific direct current power and is supplied to light-emitting component 35, thereby light-emitting component 35 is lighted.
And, in the time that lighting device 10 is lighted, the light sending from the illuminating part 35a of light-emitting component 35 is mainly incident in LGP 15 from the plane of incidence 30 of LGP 15, one side is in the opposition side of LGP 15 internal reflections, a directive LGP 15, and a part for the light of repeated reflection is from surface element 25 outgoing.
And then one side is at the light of the opposition side of LGP 15 internal reflections, a directive LGP 15, by the light guide section 31 between slot part 29 and the surface element 25 of opposition side and arrive end face portion 27, the side from end face portion 27 to LGP 15 or top outgoing.
Therefore, light-emitting area 28 entirety that comprise surface element 25 and end face portion 27 of LGP 15, luminous with uniform brightness.
So, configure light-emitting component 35 by the slot part 29 in back part 26 sides that are arranged at LGP 15, and the light that can make to be incident to LGP 15 from light-emitting component 35 is also from end face portion 27 outgoing of LGP 15, thereby can makes the surrounding of lighting device 10 brighten.Thus, also can make the ceiling surface 11 that is provided with lighting device 10 brighten, thereby can reduce sense of discomfort.
In addition, by surface element 25 sides more lean on LGP 15 than the slot part of LGP 15 29, the light guide section 31 of the end face portion 27 that is connected in LGP 15 is set, photoconduction can be caused to end face portion 27.
In addition, light-emitting component 35 is: by the slot part 29 of LGP 15, so that illuminating part 35a subtend is in configuring with the mode of the plane of incidence 30 of the center side subtend of LGP 15, photoconduction can be caused to another distolateral end face portion 27.
In addition, by the end face portion of LGP 15 27 is formed as to flexure plane, can make the light of outgoing upward increase.
And then, by the outer surface of the surface element 25 at LGP 15 and end face portion 27, diffusion facilities 32 is set, can reduce the generation of the brightness disproportionation being caused by open-wire line etc.
Secondly, in Fig. 3 and Fig. 4, represent the 2nd embodiment.In addition,, for formation and the action effect identical with the 1st embodiment, also the description thereof will be omitted to use identical symbol.
As shown in Figure 3, lighting device 10 comprises: reflecting device 40, this reflecting device 40 makes towards at least reflecting to the plane of incidence 30 with light inner surface side, that carry out self-emission device 35 of the slot part 29 of surface element 25 subtends of LGP 15.Reflecting device 40 is reflecting plate 41, and this reflecting device 40 is configured in the light exit side of light-emitting component 35, and the light that sends from light-emitting component 35 is reflected in the mode of the plane of incidence 30 that is all incident to LGP 15.
The in the situation that of areflexia plate 41, as shown in the dotted arrow of Fig. 3, the light of light-emitting component 35 near the position of light-emitting component 35 towards the surface element 25 of LGP 15, and not in LGP 15 towards another distolateral leaded light, easily become open-wire line and outgoing from the surface element 25 of LGP 15.
In the situation that having reflecting plate 41, as shown in the solid arrow of Fig. 3, the light of light-emitting component 35 is all incident to the plane of incidence 30 of LGP 15, easily in LGP 15 towards another distolateral leaded light.
Fig. 4 (a) (b) in representation case if LGP 15 is for circular and be arranged on the intensity map that the slot part 29 in LGP 15 is the light-emitting area in tetragonal situation.Fig. 4 (a) is the Illumination Distribution figure that has the light-emitting area 28 in the situation of reflecting plate 41, and Fig. 4 (b) is the Illumination Distribution figure of the light-emitting area 28 in the situation of areflexia plate 41.As shown in Fig. 4 (b), the in the situation that of areflexia plate 41, the open-wire line A consistent with the shape of slot part 29 penetrates to light-emitting area 28, and therefore the uniformity of light-emitting area 28 reduces.With respect to this, as shown in Fig. 4 (a), in the situation that having reflecting plate 41, open-wire line does not penetrate to light-emitting area 28, therefore can improve the uniformity of light-emitting area 28, and make to increase towards the light of another distolateral leaded light in LGP 15, can make increases from the light of end face portion 27 outgoing, thereby can make the surrounding of lighting device 10 become brighter.
In addition, as shown in Figure 3, the end face portion 27 of LGP 15 also can be: with respect to surface element 25 and back part 26 and substantially vertical face.In this case, by diffusion facilities 32 being set in end face portion 27, can make also outgoing upward of light.
Secondly, in Fig. 5, represent the 3rd embodiment.In addition,, for the formation identical with each embodiment and action effect, also the description thereof will be omitted to use identical symbol.
Reflecting device 40 is arranged on and the inner surface of the slot part 29 of surface element 25 subtends of LGP 15.As reflecting device 40, can use the reflecting layer that is for example coated with reflecting material at the inner surface of this slot part 29, also configurable reflecting plate.
In this case, the in the situation that of areflexia equipment 40, as shown in the dotted arrow of Fig. 5, also easily become open-wire line and outgoing from the surface element 25 of LGP 15.
By having reflecting device 40, as shown in the solid arrow of Fig. 5, the light of light-emitting component 35 is all incident to the plane of incidence 30 of LGP 15, and easily in LGP 15 towards another distolateral leaded light.
Secondly, in Fig. 6, represent the 4th embodiment.In addition,, for the formation identical with each embodiment and action effect, also the description thereof will be omitted to use identical symbol.
With the inner surface of the slot part 29 of surface element 25 subtends of LGP 15, diffusion facilities 44 is set.As diffusion facilities 44, for example, can carry out sandblast (blasting) to the inner surface of this slot part 29 and process and make the inner surface of this slot part 29 there is surface scattering characteristic, also configurable diffuser plate.
In this case, without diffusion facilities 44 in the situation that, as shown in the dotted arrow of Fig. 6, also easily become open-wire line and outgoing from the surface element 25 of LGP 15.
By thering is diffusion facilities 44, as shown in the solid arrow of Fig. 6, towards with the light of the light-emitting component 35 of the inner surface of the slot part 29 of surface element 25 subtends of LGP 15, utilize diffusion facilities 44 to spread and be incident in LGP 15, easily at the interior leaded light of LGP 15.Be incident to a part for the light in LGP 15 by diffusion facilities 44 towards near the end face portion 27 being positioned at, thereby increase from the light of end face portion 27 outgoing.
In addition, in the time that lighting device 10 is lighted and the time of extinguishing, in the case of observing surface element 25 sides of LGP 15, all can alleviate by diffusion facilities 44 situation of the existence of seeing light-emitting component 35.
Secondly, in Fig. 7, represent the 5th embodiment.In addition,, for the formation identical with each embodiment and action effect, also the description thereof will be omitted to use identical symbol.
The back part 26 of LGP 15 is arranged on base plate 14, disposes base plate 14 in the rear side of slot part 29.In the part of the base plate 14 in this slot part 29, be provided with light absorbing absorption equipment 47.Absorption equipment 47 for example forms absorbed layer by black application.
Without absorption equipment 47 in the situation that, as shown in the dotted arrow of Fig. 7, penetrate and reflect only at base plate 14 from light-emitting component 35: the surface element 25 near position light-emitting component 35 towards LGP 15, and not at the interior leaded light of LGP 15, easily become open-wire line and outgoing from the surface element 25 of LGP 15.
By thering is absorption equipment 47, be absorbed equipment 47 towards the light of the light-emitting component 35 of base plate 14 and absorb and reduce volume reflection, penetrate open-wire line thereby can reduce from the surface element 25 of LGP 15.
In addition, reflecting device 40, diffusion facilities 44 and absorption equipment 47 also can be combined to use.
Secondly, in Fig. 8, represent the 6th embodiment.In addition,, for the formation identical with each embodiment and action effect, also the description thereof will be omitted to use identical symbol.
The slot part 29 that is arranged on back part 26 sides of LGP 15 is: the groove shape that also can be outside opening.
Secondly, in Fig. 9, represent the 7th embodiment.In addition,, for the formation identical with each embodiment and action effect, also the description thereof will be omitted to use identical symbol.
With the 6th embodiment in the same manner, carry out the groove shape of opening the outside of slot part 29 in back part 26 sides that are arranged at LGP 15, than slot part 29 sides side-prominent mode more outward, end face portion 27 is formed as to inclined plane or curved surface with surface element 25 sides.For example, be made as: the inclined plane of 40 ° tilts with respect to the light exit direction (perpendicular to the direction of surface element 25) of the surface element 25 from LGP 15.
Thus, make a part that arrives the light of end face portion 27 by light guide section 31 reflex to surface element 25 sides outgoing, and a part that makes light is from end face portion 27 to side or top outgoing.
Several embodiments of the present invention are illustrated, but these embodiments are as an example and prompting person is not intended to limit scope of invention.These embodiments can be implemented with other various forms, and can in the scope of purport that does not depart from invention, carry out various omissions, replacement and change.These embodiments or its distortion are contained in scope of invention or purport, and are contained in the invention recorded in the scope of claim and impartial scope thereof.

Claims (6)

1. a lighting device, is characterized in that comprising:
LGP, has: surface element, be the slot part of the back part of opposition side and a side that is arranged on described back part with respect to described surface element; And
Light-emitting component, is configured in the slot part of described LGP.
2. lighting device according to claim 1, is characterized in that:
On described LGP, more outer more distolateral and be provided with the end face portion of described LGP than the described slot part of described LGP, and
At the light guide section that is more provided with the described end face portion that is connected in described LGP than the described slot part of described LGP by a side of the described surface element of described LGP.
3. lighting device according to claim 1 and 2, is characterized in that:
The described slot part of described LGP is arranged on the periphery of described LGP, and has the plane of incidence with the inner surface of the described slot part of the center side subtend of described LGP,
Described light-emitting component has illuminating part, and in the described slot part of described LGP, configure in the mode of described illuminating part and described plane of incidence subtend.
4. lighting device according to claim 3, characterized by further comprising:
Reflecting device, make towards with the inner surface side of the described slot part of the described surface element subtend of described LGP, reflect to the described plane of incidence from the light of described light-emitting component.
5. lighting device according to claim 3, characterized by further comprising:
Diffusion facilities, make towards with the inner surface side of the described slot part of the described surface element subtend of described LGP, from the light diffusion of described light-emitting component.
6. lighting device according to claim 3, characterized by further comprising:
Base plate, for the rear side that described LGP is installed; And
Absorption equipment, absorbs the light from described light-emitting component towards described base plate.
CN201310418401.4A 2013-03-15 2013-09-13 Lighting device Pending CN104048226A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013053630A JP2014179283A (en) 2013-03-15 2013-03-15 Lighting device
JP2013-053630 2013-03-15

Publications (1)

Publication Number Publication Date
CN104048226A true CN104048226A (en) 2014-09-17

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CN201310418401.4A Pending CN104048226A (en) 2013-03-15 2013-09-13 Lighting device

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JP (1) JP2014179283A (en)
KR (1) KR20140113270A (en)
CN (1) CN104048226A (en)
TW (1) TW201435260A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111684205A (en) * 2018-02-27 2020-09-18 松下知识产权经营株式会社 Lighting device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6586851B2 (en) * 2015-10-13 2019-10-09 大日本印刷株式会社 Lighting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111684205A (en) * 2018-02-27 2020-09-18 松下知识产权经营株式会社 Lighting device

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KR20140113270A (en) 2014-09-24
TW201435260A (en) 2014-09-16
JP2014179283A (en) 2014-09-25

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Application publication date: 20140917