WO2012169624A1 - 照明装置 - Google Patents

照明装置 Download PDF

Info

Publication number
WO2012169624A1
WO2012169624A1 PCT/JP2012/064821 JP2012064821W WO2012169624A1 WO 2012169624 A1 WO2012169624 A1 WO 2012169624A1 JP 2012064821 W JP2012064821 W JP 2012064821W WO 2012169624 A1 WO2012169624 A1 WO 2012169624A1
Authority
WO
WIPO (PCT)
Prior art keywords
light source
light
plate
radiation
reflection plate
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.)
Ceased
Application number
PCT/JP2012/064821
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
榮一 佐藤
佐藤　研
弘泰 佐藤
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.)
Opto Design Inc
Original Assignee
Opto Design Inc
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 Opto Design Inc filed Critical Opto Design Inc
Priority to EP12797016.8A priority Critical patent/EP2719939A4/en
Priority to CN201280027588.9A priority patent/CN103597271B/zh
Priority to US14/116,672 priority patent/US9062848B2/en
Publication of WO2012169624A1 publication Critical patent/WO2012169624A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
    • F21V11/14—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures with many small apertures
    • 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
    • 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
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/033—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade
    • 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
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F21V7/0033—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following
    • F21V7/0041—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following for avoiding direct view of the light source or to prevent dazzling
    • 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
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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
    • 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]

Definitions

  • the present invention relates to an illuminating device, and more particularly, to an illuminating device that can illuminate a light irradiation surface substantially uniformly using a light-emitting diode as a light source while being thin.
  • LEDs light-emitting diodes
  • various types of LEDs have been developed and commercialized and are used in a wide range of fields.
  • Many of LEDs have been conventionally used as operation indicator lamps for electronic devices because of their low power consumption, long life, and small size.
  • These LEDs have been used in, for example, backlights for liquid crystal panels, various display boards, electric bulletin boards, and illumination devices, but are also being used in the lighting field.
  • headlights or taillights for automobiles for example, headlights or taillights for automobiles, light bulb-like lighting devices and planar lighting devices incorporating a plurality of LEDs, and lighting devices that can be used in the same manner as fluorescent lamps by incorporating LEDs in a tube. Etc. are used.
  • a planar light source that emits light uniformly is required as a planar light source used for indoor lighting devices and the like.
  • LEDs have strong directivity of light, they are used as they are for indoor lighting devices and the like. Not suitable for.
  • a reflection means is provided on the light emitting surface to multiply reflect light. (See Patent Documents 1 and 2 below).
  • the highly directional light of the LED directly enters the eyes, unpleasant glare called glare occurs.
  • the light emitted from the light source is reflected at least once by the side wall of the opening of the reflection means provided in the light source device or on the radiation surface of the light source device and then passes through the opening.
  • a known light source device is known (see Patent Document 3 below).
  • a point light source is provided at the bottom of a box assembly called a casing or a housing, and a reflecting means is provided at the opening of the casing, that is, a surface facing the point light source. Light with strong directivity from the light source is radiated by multiple reflection and uniformized.
  • JP 2006-012818 A JP 2009-016093 A JP 2009-004248 A (paragraphs [0023], [0028] to [0039], FIG. 1A)
  • each of the light source devices disclosed in Patent Documents 1 to 3 a box-shaped casing having a bottom portion and a side wall portion is used, and the shape of the entire light source device is also a box shape.
  • Such a structure is suitable for use as a unit in which a plurality of units are connected.
  • the light source device is used alone, there is a limit to reducing the thickness because it has a side wall portion having a predetermined height.
  • the light from the point light source is reflected by multiple reflections between the reflector arranged in the light emission direction of the LED, the bottom portion to which the LED is fixed, and the side wall portion. Is spread in a planar shape, and the light irradiated from the light irradiation surface is made uniform.
  • the lighting device is made thin, the distance between the LED of the light source device and the reflecting means becomes small, and depending on the material of the reflecting means, the specific wavelength from the LED is absorbed by the reflecting means directly above the LED. As a result, uneven color occurs in the surrounding area. For this reason, there is a limit in reducing the distance between the LED and the reflecting means.
  • an object of the present invention is to provide an illuminating device that can be made thinner while using a light emitting diode as a light source to illuminate a light irradiation surface substantially uniformly.
  • the illumination device includes a light source, a light source side reflecting plate to which the light source is fixed, a radiation side reflecting plate facing the light source side reflecting plate, the light source side reflecting plate, and the radiation side.
  • the light source is composed of one or a plurality of light emitting diodes, and the radiation-side reflecting plate has the highest light reflectance at the portion facing the light source, and has the highest light transmittance.
  • the light source is formed such that the light reflectance is low and the light transmittance is high as the distance from the light source is increased, and the distance between the light source side reflection plate and the radiation side reflection plate is a portion where the light source is disposed. It is the largest, and it is made to become small as it distances from the part in which the said light source is arrange
  • the portion of the radiation-side reflecting plate that faces the light source has the highest light reflectance and the lowest light transmittance, and moves away from the light source. Accordingly, since the light reflectance is low and the light transmittance is high, uniform illumination light can be obtained from the entire surface of the radiation side reflection plate. Furthermore, since the distance between the light source side reflection plate and the radiation side reflection plate is the largest in the portion where the light source is disposed, color unevenness is unlikely to occur, while the distance between the light source side reflection plate and the radiation side reflection plate is small. Since it becomes smaller as the distance from the portion where the light source is arranged and becomes the smallest at the peripheral edge of the illumination device, it can be visually felt thinner.
  • the lighting device according to the second aspect of the present invention is the lighting device according to the first aspect, wherein the fixing means has a predetermined height provided at outer edges of the light source side reflection plate and the radiation side reflection plate.
  • the light source side reflection plate and the radiation side reflection plate are fixed with a gap therebetween by the fixing means.
  • the illumination device of the second aspect of the present invention since the emitted light from the light source is emitted from the gap provided between the light source side reflection plate and the radiation side reflection plate at the outer edge portion of the illumination device, The outer edge portion is unlikely to be dark, and more uniform illumination light can be obtained.
  • the lighting device according to the third aspect of the present invention is the lighting device according to the first aspect, wherein the fixing means does not provide a gap between outer edges of the light source side reflection plate and the radiation side reflection plate. It is a member which fixes a reflecting plate and the said radiation side reflecting plate, It is characterized by the above-mentioned.
  • the light source side reflection plate and the radiation side reflection plate are fixed without providing a gap, so that the outer edge portion of the illumination device feels thinner. A lighting device can be obtained.
  • a light diffusion plate is provided on the light exit surface side of the radiation side reflection plate with a predetermined gap from the radiation side reflection plate. It is preferable.
  • the above-mentioned predetermined actions and effects can be achieved even if the radiation-side reflecting plate remains exposed.
  • illumination light with a more uniform illuminance distribution can be obtained by using a diffusion plate having a light scattering action.
  • the light source is preferably a plurality of light emitting diodes arranged in a strip shape or a ring shape.
  • LED is a well-known point light source with strong directivity and high emission intensity.
  • the lighting device of the present invention it is brighter even if the size is large by using light emitting diodes arranged in strips or rings. A lighting device is obtained.
  • FIG. 1A is a perspective view of the illumination device according to the first embodiment of the present invention
  • FIG. 1B is a cross-sectional view taken along line IB-IB in FIG. 1A. It is a disassembled perspective view of the illuminating device of FIG. 1A. It is a top view of the radiation side reflection plate of the illuminating device of FIG. 1A.
  • FIG. 4 is a development view of the radiation side reflection plate of FIG. 3.
  • FIG. 5A is a perspective view of a lighting apparatus according to the second embodiment of the present invention
  • FIG. 5B is a cross-sectional view taken along the line VB-VB in FIG. 5A. It is a disassembled perspective view of the illuminating device of FIG. 5A.
  • FIGS. 1A is a perspective view of the lighting device according to the first embodiment of the present invention
  • FIG. 1B is a cross-sectional view taken along line IB-IB of FIG. 1A
  • FIG. 2 is an exploded perspective view of the lighting device of FIG. 3 is a plan view of the radiation-side reflecting plate of the illumination device of FIG. 1A
  • FIG. 4 is a development view of the radiation-side reflecting plate of FIG.
  • the illumination device 1 includes a flat frame body 2, a light source device 4 fixed to the frame body 2, and the frame body 2 and the light source device 4. And a dome-shaped diffusion plate 3 attached so as to cover.
  • the frame body 2 is formed of a metal plate material or a synthetic resin molded body, and has a disk shape in the first embodiment.
  • the frame 2 is provided with a light source device 4 and a substrate (not shown) connected to the light source 5 disposed in the light source device 4.
  • the light source device 4 is covered with the diffusion plate 3 with a predetermined gap. Yes.
  • uniform illumination light can be obtained even when used alone, but by using a diffuser plate having a light scattering action, the light source device 4 can be protected from external impacts. Thus, illumination light with a more uniform illuminance distribution can be obtained.
  • the light source device 4 includes a light source 5 composed of LEDs, a flat light source side reflecting plate 6 in which the light source 5 is fixed at the center, and a light source side reflecting plate 6.
  • a radiation-side reflecting plate 7 is provided.
  • the light source 5 is fixed to a substrate (not shown) fixed to the frame body 2 and further connected to an external power source or the like.
  • the light source 5 is an LED having one light emitting element or a plurality of light emitting elements, and is a point light source.
  • a mounting hole 6 a for installing the light source 5 is provided in the center of the light source side reflection plate 6.
  • the light source side reflection plate 6 may be a ceiling surface or a side wall surface depending on the installation state of the light source device 4.
  • the light source side reflection plate 6 is formed of a material such as an ultrafine foamed light reflection member having a high light reflectance on the surface on which the light source 5 is arranged, and is reflected from the light source 5 reflected by the radiation side reflection plate 7. Multiple reflections of light with high light reflectivity can be used efficiently.
  • a fixing member 10 for fixing the radiation side reflection plate 7 at a predetermined interval is provided.
  • the fixing member 10 is made of a plate-like body that is vertically attached to the light source side reflection plate 6, and the top portion is a locking claw for locking the radiation side reflection portion.
  • the radiation-side reflecting plate 7 can be fixed to the light source-side reflecting plate 6 by being locked in the locking holes 7 a provided in the plate 7.
  • the radiation-side reflecting plate 7 has a shape obtained by cutting the top of a cone by a plane parallel to the bottom, that is, a truncated cone, and the bottom is an opening (see FIG. 1). . That is, the distance between the light source side reflection plate 6 and the radiation side reflection plate 7 is the largest at the portion where the light source 5 is arranged, becomes smaller as the distance from the light source 5 increases, and becomes the smallest at the peripheral portion of the illumination device 1.
  • a gap G is provided at the ends of the light source side reflection plate 6 and the radiation side reflection plate 7.
  • the distance between the light source 5 and the radiation side reflection plate 7 is 5 mm, for example, and the distance between the light source side reflection plate 6 and the radiation side reflection plate 7, that is, G is 2 mm, for example.
  • the radiation-side reflecting plate 7 of the first embodiment is obtained by cutting out a part of a disk-like ultrafine foamed light reflecting member into a fan shape and aligning the sides 7b and 7c of the cut-out portion. Then, it is formed in a truncated cone shape by fixing with an adhesive or the like.
  • the shape of the radiation-side reflecting plate 7 is not limited to the truncated cone shape, and the distance between the light-source-side reflecting plate 6 and the radiation-side reflecting plate 7 is the largest in the portion where the light source is disposed, and decreases as the distance from the light source 5 increases.
  • a truncated pyramid having a polygonal bottom surface or a part of a sphere may be used.
  • the degree of multiple reflection between the radiation side reflection plate 7 and the light source side reflection plate 6 varies depending on the shape of the radiation side reflection plate 7, the light reflectance and light transmittance of the radiation side reflection plate 7 described later are adjusted. As a result, uniform illumination light can be emitted from the entire surface of the radiation-side reflecting plate 7.
  • the radiation-side reflecting plate 7 is made of a material such as an ultrafine foamed light reflecting member having high light reflectance and low light transmittance.
  • a material such as an ultrafine foamed light reflecting member having high light reflectance and low light transmittance.
  • the radiation-side reflecting plate 7 is provided with a central light-conducting reflection part 8 directly above the light source 5 and an outer light-conduction reflecting part 9 around the outer periphery of the central light-conduction reflection part 8. .
  • the central light conducting / reflecting portion 8 corresponds to the top of the frustoconical radiation-side reflecting plate 7.
  • a central portion 8 a is provided at the central portion of the central light conducting / reflecting portion 8, that is, at a portion immediately above the light source 5.
  • the central portion 8a is formed with a high light reflectance and a low light transmittance, reflects strong light emitted from the light source 5, further reflects the reflected light to the light source side reflection plate 6, and part of it radiates again. Multiple reflection is performed by the side reflection plate 7.
  • the light reflectance of the central portion 8a is appropriately set by selecting an optical reflecting plate material and processing the material (for example, forming a half groove and adjusting the plate thickness) so that light can be used efficiently.
  • a peripheral portion 8 b is provided around the center portion 8 a, that is, at the boundary portion with the outward light conducting reflection portion 9.
  • a small hole is provided in the peripheral part 8b, and it is designed to transmit a part of light while increasing the light reflectance next to the central part 8a.
  • the small hole may be replaced with a slit or a narrow groove.
  • circular conducting holes 9a are formed at predetermined intervals.
  • the size of the conduction hole 9a gradually increases as the distance from the central light conduction reflection portion 8 increases. That is, the light reflectance is low and the light transmittance is high as the distance from the light source 5 increases.
  • this conduction hole 9a can take various shapes, such as a polygon, such as a rectangle and a triangle, and a star shape.
  • a concentric annular or rectangular slit may be provided so that the width increases as the distance from the central light conduction reflection portion 8 increases.
  • the light emitted from the light source 5 is multiple-reflected between the light source side reflection plate 6 and the radiation side reflection plate 7, and a part of the light is transmitted from the radiation side reflection unit 7. 7 can obtain uniform illumination light from the entire surface.
  • the light source device 4 is thinned and the distance between the light source 5 made of LED and the radiation side reflection plate is reduced to, for example, less than 3 mm, the light corresponding to the portion facing the light source 5 of the radiation side reflection plate 7 becomes stronger.
  • the specific wavelength from the light source 5 is largely absorbed by the reflecting means immediately above the light source 5, thereby causing uneven color in the surrounding portion.
  • the distance between the light source side reflection plate 6 and the radiation side reflection plate 7 is set to be the largest in the portion where the light source 5 is disposed.
  • the distance between the light source side reflection plate 6 and the radiation side reflection plate 7 becomes smaller as the distance from the portion where the light source 5 is arranged, and becomes the smallest at the peripheral edge of the illumination device 1. You can feel it.
  • the outer edge portion is unlikely to be dark, and more uniform illumination light can be obtained. it can.
  • the light source side reflection plate 6 and the frame 2 are formed in a flat plate shape, so that the lighting device 1 can be attached in close contact with a flat surface such as a wall surface.
  • a flat surface such as a wall surface.
  • the distance between the light source side reflection plate 6 and the radiation side reflection plate 7 is the largest at the portion where the light source is disposed, and the distance from the light source is reduced, the radiation is reduced.
  • the light source side reflection plate 6 can be shaped like a truncated cone, a truncated pyramid or a part of a sphere.
  • the radiation-side reflecting plate 7 may be formed by sticking a film provided with a reflecting portion by printing or vapor deposition on a light conducting member such as a transparent plate.
  • a reflection dot is provided in the peripheral part of the central light conduction reflection part and the outer light conduction reflection part instead of the conduction hole and the slit, and the light reflectance and light transmittance are set to appropriate values.
  • the reflective dot pattern may be any pattern other than the conductive hole pattern.
  • the shape of the reflective dot can be circular, square, or other shapes, similar to the conductive hole.
  • the radiation-side reflector and the light-source-side reflector are formed by printing, vapor deposition, etc., it becomes possible to manufacture using existing equipment.
  • radiation having a curved surface It becomes easy to manufacture a side reflector and the like. That is, in addition to the frustoconical shape like the radiation side reflector of the first embodiment, a radiation side reflector having a shape like a part of a sphere can be easily manufactured. Furthermore, since mass production of the radiation-side reflector and the like is facilitated, it is possible to reduce the cost when producing a large amount of the radiation-side reflector and the light source-side reflector.
  • FIGS. 5A is a perspective view of an illumination device according to the second embodiment of the present invention
  • FIG. 5B is a cross-sectional view taken along the line VB-VB of FIG. 5A
  • FIG. 6 is an exploded perspective view of the illumination device of FIG.
  • the illuminating device 1A according to the second embodiment differs in part from the illuminating device 1 according to the first embodiment, and the other parts are common, so the common parts are attached with the same reference numerals.
  • the letter “A” is given and its detailed description is omitted.
  • the lighting device 1 ⁇ / b> A omits the frame of the lighting device 1 according to the first embodiment, and is a flat plate attached to cover the light source device 4 ⁇ / b> A and the light source device 4 ⁇ / b> A. Diffusing plate 3A.
  • the light source device 4A includes a light source 5A, a bowl-shaped light source side reflecting plate 6A having an opening in which the light source 5A is fixed at the center, and a flat plate-like radiation disposed so as to close the opening of the light source side reflecting plate 6A.
  • a side reflector 7A is provided.
  • the light source 5A having the same configuration as that of the light source 5 of the first embodiment can be used, and the light source side reflection plate 6A also serves as the frame of the lighting device according to the first embodiment.
  • a flat plate-like diffusion plate 3A is directly attached to the opening of the light source side reflection plate 6A further outward of the radiation side reflection plate 7A with a gap from the radiation side reflection plate 7A. Further, as shown in FIG.
  • the light source device 4A side is rounded inward to form a fixed portion 11 at the end of the diffusion plate 3A, and the open end 6b of the light source side reflecting plate 6A rounded outward. It is locked to and fixed. That is, the diffusion plate 3A also has a function as a fixing means for fixing the radiation side reflection plate 7A to the light source side reflection plate 6A.
  • the radiation-side reflecting plate 7A is flat, but the light source-side reflecting plate 6A has a bowl shape, and therefore, between the light source-side reflecting plate 6A and the radiation-side reflecting plate 7A.
  • the distance is the largest at the portion where the light source 5A is disposed, and the distance becomes smaller as the distance from the light source 5A increases, and is 0 at the peripheral portion of the lighting device 1A.
  • the light source side reflecting plate 6A of the present invention has a bowl shape, it may be a truncated cone shape, a polygonal truncated pyramid shape or a part of a sphere.
  • the radiation side reflection plate 7A has a flat shape and does not have a locking hole for fixing to the light source side reflection plate 6A. 7 is the same configuration. In the second embodiment, the radiation side reflection plate 7A is fixed to the light source side reflection plate 6A by the diffusion plate 3A. However, the light source side reflection is the same as that of the first embodiment or other known fixing means. It may be fixed to the plate 6A. Further, a frame similar to that of the first embodiment may be provided outside the light source device 4A.
  • the outer edge portion of the illuminating device 1A is made thinner. It is possible to obtain the lighting device 1A that makes it feel. Further, since the light source side reflecting plate 6A has a bowl shape and the radiation side reflecting plate has a flat shape, the appearance of the illuminating device 1A can be made flat when it is embedded in a ceiling or a wall. The embedding space can be made thinner. Furthermore, the number of components can be reduced by omitting the frame and directly fixing the diffusion plate 3A to the light source side reflection plate 6A.
  • FIGS. 7 is a perspective view of the light source device according to the third embodiment of the present invention
  • FIG. 8 is an exploded perspective view of the light source device of FIG. 7
  • FIG. 9 is a plan view of the radiation-side reflecting plate of the light source device of FIG. It is. 7 to 9, the diffusing plate and the frame of the lighting device are omitted.
  • the lighting device 1B according to the third embodiment of the present invention is different from the light source device 4 of the lighting device 1 according to the first embodiment in the shape and the arrangement of the light source 5B, and the other parts are the same.
  • the illustration is omitted, or the suffix “B” is given to the same reference numeral, and the detailed description thereof is omitted.
  • the light source device 4B of the illumination device 1B includes two light sources 5B having a predetermined length and an elliptical flat plate shape to which the light sources 5B are fixed.
  • the light source side reflection plate 6B and the elliptical truncated cone radiation side reflection plate 7B disposed to face the light source side reflection plate 6B are provided.
  • the light source 5B has a plurality of LEDs arranged in a line.
  • the radiation-side reflecting plate 7B has a truncated cone shape similar to that of the first embodiment, but the bottom and the top are elliptical in accordance with the shape of the light source 5B.
  • two central light conducting / reflecting portions 8B corresponding to the respective light sources 5B are provided, and an outer light conducting / reflecting portion 9B is provided at the periphery thereof.
  • a central portion 8Ba having a length corresponding to the light source 5B is provided in the central portion of the central light conducting / reflecting portion 8B, that is, a portion immediately above the light source 5B, and the periphery of the central portion 8Ba, that is, the boundary with the outer light conducting / reflecting portion 9B.
  • Peripheral part 8Bb is provided in the part.
  • the distance between the light source side reflection plate 6B and the radiation side reflection plate 7B is the largest at the central light conducting reflection portion 8B, becomes smaller as it goes away from the light source, and becomes the smallest at the peripheral portion of the illumination device.
  • a gap is provided between end portions of the reflecting plate 6 and the radiation side reflecting plate 7.
  • the distance between the light source side reflection plate 6B and the radiation side reflection plate 7B is the central light. It is made equal to the distance with the light source side reflecting plate 6B in the conduction
  • the opening patterns of the conduction holes 9Ba provided in the outward light conduction reflection portion 9B are arranged such that the areas of the conduction holes 9Ba gradually increase as they move away from the two central light conduction reflection portions 8B. It has become.
  • a plurality of LEDs are arranged in a line, but this arrangement is not limited to a line, and the plurality of LEDs may have various shapes such as an annular shape and a rectangular shape. Can be arranged. In this case, the area, the light reflectance, and the light transmittance of the central light conducting / reflecting portion are adjusted according to the respective arrangements.
  • FIGS. 10 is an exploded perspective view of a modification of the light source device according to the third embodiment of the present invention
  • FIG. 11 is a plan view of the radiation-side reflecting plate of the light source device of FIG. 10
  • FIG. FIG. 13 is an exploded perspective view of another modification of the light source device according to the embodiment
  • FIG. 13 is a plan view of the radiation-side reflecting plate of the light source device of FIG.
  • the light sources 5C are arranged at predetermined intervals at two locations on the elliptical light source side reflection plate 6C (see FIG. 10).
  • a central light conducting / reflecting part 8C is provided immediately above the two light sources 5C, and an outer light conducting / reflecting part 9C is provided on the outer periphery of the central light conducting / reflecting part 8C including the central part 8Ca and the peripheral part 8Cb. Is provided. That is, the opening patterns in which the conduction holes 9Ca gradually increase as they move away from the central part 8Ca of the two central light conducting reflection parts 8C are arranged (see FIG. 11).
  • the six light sources 5D arranged linearly at predetermined intervals are the central part of the long axis of the elliptical light source side reflecting plate 6D. (See FIG. 12). In this case, since the distance between each light source 5D is small, these light sources 5D can be regarded as a linear light source.
  • a central light conducting / reflecting part 8D having a length corresponding to the virtual linear light source is provided immediately above the light source 5D, and an outer light conducting / reflecting part 9D is provided around the central light conducting / reflecting part 8D. (See FIG. 13).
  • a brighter light source device can be obtained even when the size is large by arranging a plurality of LEDs, which are well-known point light sources with high emission intensity, or using LEDs arranged in a strip shape or a ring shape. .
  • LEDs which are well-known point light sources with high emission intensity
  • LEDs arranged in a strip shape or a ring shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
PCT/JP2012/064821 2011-06-09 2012-06-08 照明装置 Ceased WO2012169624A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP12797016.8A EP2719939A4 (en) 2011-06-09 2012-06-08 LIGHTING DEVICE
CN201280027588.9A CN103597271B (zh) 2011-06-09 2012-06-08 照明装置
US14/116,672 US9062848B2 (en) 2011-06-09 2012-06-08 Light source device and illumination device including the light source device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-129200 2011-06-09
JP2011129200A JP5842274B2 (ja) 2011-06-09 2011-06-09 照明装置

Publications (1)

Publication Number Publication Date
WO2012169624A1 true WO2012169624A1 (ja) 2012-12-13

Family

ID=47296177

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/064821 Ceased WO2012169624A1 (ja) 2011-06-09 2012-06-08 照明装置

Country Status (6)

Country Link
US (1) US9062848B2 (enExample)
EP (1) EP2719939A4 (enExample)
JP (1) JP5842274B2 (enExample)
CN (1) CN103597271B (enExample)
TW (1) TW201305499A (enExample)
WO (1) WO2012169624A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020145152A (ja) * 2019-03-08 2020-09-10 船井電機株式会社 バックライト装置及び液晶表示装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9817728B2 (en) 2013-02-01 2017-11-14 Symbolic Io Corporation Fast system state cloning
US10133636B2 (en) 2013-03-12 2018-11-20 Formulus Black Corporation Data storage and retrieval mediation system and methods for using same
US9304703B1 (en) 2015-04-15 2016-04-05 Symbolic Io Corporation Method and apparatus for dense hyper IO digital retention
US10061514B2 (en) 2015-04-15 2018-08-28 Formulus Black Corporation Method and apparatus for dense hyper IO digital retention
WO2019126072A1 (en) 2017-12-18 2019-06-27 Formulus Black Corporation Random access memory (ram)-based computer systems, devices, and methods
US10725853B2 (en) 2019-01-02 2020-07-28 Formulus Black Corporation Systems and methods for memory failure prevention, management, and mitigation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08153405A (ja) * 1994-06-21 1996-06-11 Nakaya:Kk 面状光源
JP2003123526A (ja) * 2001-10-17 2003-04-25 Tootasu Japan:Kk 面光源の均一化装置
JP2003330394A (ja) * 2002-05-13 2003-11-19 Asagi Create:Kk 電飾看板
JP2006012818A (ja) 2004-06-21 2006-01-12 Samsung Electronics Co Ltd バックライトアセンブリー及びこれを用いた表示装置
JP2009004248A (ja) 2007-06-22 2009-01-08 Opt Design:Kk 面照明光源装置及び面照明装置
JP2009016093A (ja) 2007-07-02 2009-01-22 Sharp Corp Ｌｅｄモジュール及び照明装置
WO2011033900A1 (ja) * 2009-09-16 2011-03-24 シャープ株式会社 照明装置、表示装置、及びテレビ受信装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4280283B2 (ja) * 2006-01-27 2009-06-17 株式会社オプトデザイン 面照明光源装置及びこれを用いた面照明装置
JP5113573B2 (ja) * 2008-03-24 2013-01-09 パナソニック株式会社 Ｌｅｄ照明装置
JP5320599B2 (ja) * 2009-09-18 2013-10-23 株式会社オプトデザイン 光源装置およびこの光源装置を用いた面照明装置
CN102612622B (zh) * 2009-11-16 2015-06-10 Opto设计股份有限公司 面光源单元、面照明装置及液晶显示装置
US8911106B2 (en) * 2010-04-23 2014-12-16 Opto Design, Inc. Surface illumination fixture and surface illumination device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08153405A (ja) * 1994-06-21 1996-06-11 Nakaya:Kk 面状光源
JP2003123526A (ja) * 2001-10-17 2003-04-25 Tootasu Japan:Kk 面光源の均一化装置
JP2003330394A (ja) * 2002-05-13 2003-11-19 Asagi Create:Kk 電飾看板
JP2006012818A (ja) 2004-06-21 2006-01-12 Samsung Electronics Co Ltd バックライトアセンブリー及びこれを用いた表示装置
JP2009004248A (ja) 2007-06-22 2009-01-08 Opt Design:Kk 面照明光源装置及び面照明装置
JP2009016093A (ja) 2007-07-02 2009-01-22 Sharp Corp Ｌｅｄモジュール及び照明装置
WO2011033900A1 (ja) * 2009-09-16 2011-03-24 シャープ株式会社 照明装置、表示装置、及びテレビ受信装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020145152A (ja) * 2019-03-08 2020-09-10 船井電機株式会社 バックライト装置及び液晶表示装置
JP7275428B2 (ja) 2019-03-08 2023-05-18 船井電機・ホールディングス株式会社 バックライト装置及び液晶表示装置

Also Published As

Publication number Publication date
CN103597271B (zh) 2016-05-04
EP2719939A1 (en) 2014-04-16
EP2719939A4 (en) 2015-07-01
TWI563220B (enExample) 2016-12-21
US9062848B2 (en) 2015-06-23
CN103597271A (zh) 2014-02-19
JP5842274B2 (ja) 2016-01-13
JP2012256529A (ja) 2012-12-27
US20140119028A1 (en) 2014-05-01
TW201305499A (zh) 2013-02-01

Similar Documents

Publication Publication Date Title
CN102483199B (zh) 使用点光源的面照明方法、线状光源装置以及使用该线状光源装置的面照明装置
JP5842274B2 (ja) 照明装置
JP5550505B2 (ja) 面状照明装置およびこれを備えた液晶表示装置
TW201307753A (zh) 使用發光體之面照明光源裝置
CN205065496U (zh) 照明装置
WO2013128761A1 (ja) 照明モジュールおよびそれを備えた照明装置
JP2015215984A (ja) 発光装置、面光源装置および表示装置
JP2013182730A (ja) 照明モジュールおよびそれを備えた照明装置
JP5816908B2 (ja) Ｌｅｄ光源装置及びこの光源装置を用いた照明装置
JP6121728B2 (ja) 照明装置
CN204534162U (zh) 照明装置
JP5515002B2 (ja) 面照明光源装置及びこの面照明光源装置を用いた面照明装置
US8789961B2 (en) Direct-type LED backlight module
JP2013026087A (ja) 照明装置
JP5515001B2 (ja) 面照明光源装置及びこの面照明光源装置を用いた面照明装置
JP5853128B2 (ja) 照明器具
JP2012243680A (ja) 照明装置
JP5559649B2 (ja) 照明装置
JP5858330B2 (ja) 表示装置
JP5853208B2 (ja) 照明器具
JP5968724B2 (ja) 照明モジュールおよびそれを備えた照明装置
JP2014229545A (ja) 光源装置及びこの光源装置を用いた照明装置
JP5914858B2 (ja) 照明器具
KR20120042062A (ko) 회절 렌즈를 구비한 액정표시장치용 직하형 백 라이트 유닛
JP2019220330A (ja) 発光装置及びライトガイド方法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201280027588.9

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12797016

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 14116672

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE