WO2014119148A1 - Module d'éclairage - Google Patents

Module d'éclairage Download PDF

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Publication number
WO2014119148A1
WO2014119148A1 PCT/JP2013/083501 JP2013083501W WO2014119148A1 WO 2014119148 A1 WO2014119148 A1 WO 2014119148A1 JP 2013083501 W JP2013083501 W JP 2013083501W WO 2014119148 A1 WO2014119148 A1 WO 2014119148A1
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WO
WIPO (PCT)
Prior art keywords
light
light guide
led
guide plate
light emitting
Prior art date
Application number
PCT/JP2013/083501
Other languages
English (en)
Japanese (ja)
Inventor
栗本　英治
和也 生田
花野　雅昭
翔太 井上
卓也 石坂
Original Assignee
シャープ株式会社
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 シャープ株式会社 filed Critical シャープ株式会社
Publication of WO2014119148A1 publication Critical patent/WO2014119148A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S19/00—Lighting devices or systems employing combinations of electric and non-electric light sources; Replacing or exchanging electric light sources with non-electric light sources or vice versa
    • F21S19/005—Combining sunlight and electric light sources for indoor illumination
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/03—Sky-lights; Domes; Ventilating sky-lights
    • E04D13/033—Sky-lights; Domes; Ventilating sky-lights provided with means for controlling the light-transmission or the heat-reflection, (e.g. shields, reflectors, cleaning devices)
    • 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
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • 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
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E06B3/66371—Section members positioned at the edges of the glazing unit positioned entirely outside the gap between the panes
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E06B3/66376—Section members positioned at the edges of the glazing unit comprising lighting means
    • 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
    • F21Y2105/00—Planar light sources
    • 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • 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 illumination module that allows light to enter from a first end face and a second end face that face each other.
  • ground glass or ground glass-like resin is often used for doors and windows in houses and the like in consideration of visibility and daylighting.
  • ground glass and ground glass-like resin are translucent, they are inferior to transparent members in terms of visibility from both sides.
  • Patent Document 1 a bathroom door that is shielded as necessary while applying a transparent member to the bathroom door is known.
  • the bathroom door disclosed in Patent Document 1 is a bathroom door that incorporates a transparent surface material having a double structure that partitions the bathroom and the dressing room, and has an ultra-bright LED on the upper portion between the transparent surface materials. By arranging and energizing, light is emitted and guided to the transparent surface material, and the transparent surface material is shielded from light.
  • the present invention has been made in view of the above-described conventional problems, and the object thereof is to suppress power consumption and ensure light-shielding properties on the entire surface, and to switch between light-transmitting and light-shielding front and back surfaces.
  • Another object of the present invention is to provide an illumination module capable of stepwise switching between translucency and light shielding properties and adjusting the brightness of illumination.
  • the illumination module guides light incident from the first end surface and the second end surface facing each other and transmits the light from the light exit surface.
  • a light guide member, a first light source that makes light incident on the first end face of the light guide member, and a second light source that makes light incident on the second end face of the light guide member The light guide member includes a light emitting surface configured to guide a part of light guided inside the light guide member to the light emitting surface side and emit the light from the light emitting surface to the outside.
  • the light emitting structure has different light emission characteristics between the light from the first light source and the light from the second light source.
  • the first light source and the second light source each independently control the amount of light incident on the light guide member. It is characterized that it is possible to control to.
  • power consumption can be suppressed and light-shielding properties of the entire surface can be secured, and the front and back surfaces of light-transmitting properties and light-shielding properties can be switched.
  • (A) is a front view which shows the structure of the illumination module in Embodiment 1 of this invention
  • (b) is the sectional view on the AA 'line of (a) which shows lighting control of the illumination module by a 1st light source.
  • (C) is a cross-sectional view taken along line AA ′ of (a) showing lighting control of the illumination module by the second light source.
  • (A) is a front view which shows the structure of the said illumination module
  • (b) is a side view which shows the structure of an illumination module
  • (c) is a principal part side view which shows the structure of an illumination module. It is a perspective view which shows the structure of the light-projection structure part which consists of a recessed part in the said illumination module.
  • (A) is sectional drawing which shows the structure of the light-guide plate seen from the side orthogonal to the incident direction of the 1st light source in the said illumination module, and the light guide direction of the light at the time of the 1st light source lighting
  • (b) ) Is a cross-sectional view showing the configuration of the light guide plate viewed from the side perpendicular to the incident direction of the second light source and the light guide direction of the light when the second light source is turned on.
  • (A) (b) (c) is a cross-sectional view showing the path of the optical path conversion of the light emitting structure part composed of a prism inclined at an inclination angle ⁇ with respect to the incident light from the first light incident surface
  • (D), (e), and (f) are cross-sectional views showing the trajectory of the optical path conversion of the light emitting structure portion formed of a prism that is inclined at an inclination angle ⁇ with respect to the incident light from the second light incident surface.
  • It is a graph which shows the relationship between the inclination angle of the side wall of the light emission structure part which consists of a recessed part in the said illumination module, and the light intensity of the light taken out from a light-projection surface.
  • (A) is a front view which shows the structure of the illumination module in Embodiment 2 of this invention
  • (b) is the structure of the light-guide plate seen from the side orthogonal to the incident direction of the 1st light source in the said illumination module
  • (c) is a cross-sectional view showing a light guide direction when the first light source is turned on
  • (c) is a configuration of the light guide plate viewed from the side orthogonal to the incident direction of the second light source, and the second light source It is sectional drawing which shows the light guide direction of the light at the time of lighting.
  • (A) is a side view which shows the illumination state when the 1st light source is lighted in the door illuminating device provided with the illumination module in Embodiment 3 of this invention
  • (b) is 2nd in a door illuminating device. It is a side view which shows the illumination state when turning on the light source of
  • (c) is a side view showing the illumination state when both the first light source and the second light source are turned on in the door illumination device.
  • (A) is sectional drawing which shows the non-lighting state in the window illuminating device provided with the illumination module in Embodiment 4 of this invention
  • (b) is a cross section which shows the lighting state in the window illuminating device provided with the said illumination module.
  • FIG. (A) is sectional drawing which shows schematic structure of the electrical signboard provided with the illumination module in Embodiment 5 of this invention
  • (b) is a front view which shows the structure of the said electrical decoration signboard.
  • the illumination module of the present invention is used for, for example, a door illumination device attached to a residential door.
  • the door lighting device of the present invention may be fitted to a part of the door or may constitute the door itself.
  • the door lighting device can be applied to a door for a store, an office door, or various facilities in addition to a door for a house such as an entrance door and a bath door.
  • the illumination module of the present invention can be applied not only to door illumination devices but also to window illumination devices for windows including skylights.
  • FIG. 2A is a front view showing the configuration of the illumination module
  • FIG. 2B is a side view showing the configuration of the illumination module
  • FIG. 2C is a diagram showing the configuration of the illumination module.
  • the illumination module 1A includes a light guide plate 10 serving as a light guide member, a protective glass 3, and a first LED serving as a first light source ( A light-emitting diode (light emitting diode) 4a, a second LED 4b as a second light source, a light guide plate holding portion 5, and a frame 6 are provided.
  • the lighting module 1A is attached to a door provided on a wall that partitions two rooms.
  • the light emitted from the first LED 4a and the second LED 4b is guided by the light guide plate 10 and mainly emitted from the surface of the light guide plate 10 and the first surface 11 as the light emission surface.
  • the light guide plate 10 is fixed to the frame 6 by being fitted into a groove formed in the light guide plate holding portion 5.
  • the shape of the 1st surface 11 and the 2nd surface 12 of the light-guide plate 10 consists of a square, for example.
  • the shape of the light guide plate 10 does not necessarily need to be a square, and may be other polygons or other figures such as a circle.
  • the light guide plate 10 does not need to be a flat plate, and may be curved.
  • the light guide plate 10 is made of a synthetic resin having a high transmittance such as a methacrylic resin, an acrylic resin, a polycarbonate resin, a polyester resin, or a vinyl chloride resin, and has translucency. Therefore, in a state where the first LED 4a and the second LED 4b are not lit, light from one room passes through the light guide plate 10 and enters the other room. Therefore, it becomes possible to face each other's room from both rooms.
  • a synthetic resin having a high transmittance such as a methacrylic resin, an acrylic resin, a polycarbonate resin, a polyester resin, or a vinyl chloride resin
  • the first surface 11 and the second surface 12 of the light guide plate 10 are provided with light emitting structures 13 and 13 formed of concave portions.
  • light emitting structures 13 and 13 formed of concave portions When the first LED 4a and the second LED 4b are turned on, light distribution control (orientation control) of the light emitted from the first LED 4a and the second LED 4b is performed by the light emitting structures 13 and 13 formed of concave portions.
  • the light emitting structures 13 and 13 formed of recesses are optical members that change the propagation direction of light propagating through the light guide plate 10.
  • a plurality of recesses having substantially the same shape are formed on the first surface 11 and the second surface 12. Is formed.
  • the concave portions are formed in a matrix at intervals of about 250 ⁇ m on the first surface 11 and the second surface 12 of the light guide plate 10.
  • One recess has a depth of 15 ⁇ m, for example, having an opening of 30 ⁇ m in length and 30 ⁇ m in width.
  • the occupation ratio of the recesses with respect to the first surface 11 and the second surface 12 is 1.4%, for example, but the occupation ratio may be set as appropriate. If the occupation ratio increases, the translucency of the light guide plate 10 decreases, and the visibility when an indoor object is viewed through the light guide plate 10 even when the first LED 4a and the second LED 4b are not turned on decreases. On the contrary, if the occupation ratio is low, the translucency of the light guide plate 10 is increased. However, since light emitted from the light guide plate 10 is reduced, it is necessary to make appropriate settings. The details of the concave portion of the light emitting structure 13 will be described later.
  • the protective glasses 3 and 3 are glass plates for protecting the light guide plate 10, and are disposed on the first surface 11 side and the second surface 12 side of the light guide plate 10, respectively.
  • the position of the protective glass 3 is fixed by being sandwiched between the light guide plate holding part 5 and the frame 6.
  • the protective glass 3 may have an infrared cut function and / or an ultraviolet cut function.
  • the protective glass 3 is effective as a building material structure in view of incombustibility and flame retardancy, environmental resistance, crime prevention, etc., but is not limited to glass depending on the application, and is not limited to synthetic resin or thin film metal. Etc. can also be used.
  • the protective glass does not need to be colorless and transparent, and can be given design by coloring or decoration.
  • the first LED 4a and the second LED 4b are light sources for illumination.
  • the first end surface 10a and the second end surface 10b of the light guide plate 10 facing each other. are arranged in the vicinity of each other.
  • the outputs of the first LED 4a and the second LED 4b are not particularly limited, but are set to such an extent that a privacy protection effect is obtained by the light emitted from the first surface 11 and the second surface 12. It is good also as a structure which a user can adjust the output of 1st LED4a and 2nd LED4b.
  • the light emitted from the first LED 4a and the second LED 4b may be visible light (400 nm or more and 780 nm or less), for example, white, but the color of the light is not particularly limited.
  • Switching of lighting / non-lighting of the first LED 4a and the second LED 4b is performed by a power control device (not shown) that controls supply of driving power supplied to the first LED 4a and the second LED 4b, and the power control device is provided inside the lighting module 1A. Or outside.
  • the power control device is, for example, a switch disposed on an indoor wall surface.
  • power can be supplied through a metal hinge, supplied by a non-contact method, supplied by a battery installed in the door, supplied by a solar cell integrated with the lighting module, and the like. It is.
  • first LED 4a and the second LED 4b may be LED bars in which a plurality of LEDs are arranged on a common substrate, or individual LED substrates may be arranged. Moreover, you may use combining multiple types of 1st LED4a and 2nd LED4b which radiate
  • a light source other than an LED may be used as a light source for illumination.
  • a combination of a semiconductor laser and a phosphor may be used as the light source.
  • the light guide plate holding unit 5 fixes the relative position of the light guide plate 10 with respect to the frame 6 by holding the light guide plate 10 as shown in FIGS.
  • the light guide plate holding part 5 may be a part of the frame 6.
  • the material of the light guide plate holding portion 5 is, for example, metal, and in particular, aluminum is preferable from the viewpoint of weight reduction and heat dissipation, but is not particularly limited.
  • the light guide plate holding unit 5 may hold at least one of the four sides of the light guide plate 10, but by holding the vertical upper end of the light guide plate 10, the vertical lower end The light guide plate 10 can be held more stably than holding.
  • the frame 6 is a member that forms the outer frame of the lighting module 1A, and is made of a metal such as aluminum (Al).
  • the material of the frame 6 is not particularly limited.
  • the entire surface can be shielded by suppressing power consumption, and the front and back surfaces can be switched between light-transmitting and light-blocking.
  • an illumination module a door illumination device, and a window illumination device that can perform stepwise switching and adjustment of illumination brightness.
  • FIG. 1 is a front view which shows the structure of the illumination module 1A in this Embodiment.
  • FIG. 1B is a cross-sectional view taken along the line A-A ′ of FIG. 1A showing lighting control of the illumination module 1A by the first light source.
  • FIG. 1C is a cross-sectional view taken along the line A-A ′ of FIG. 1A showing lighting control of the illumination module by the second light source.
  • the first LED 4a and the second LED 4b are provided at the ends of a pair of two sides facing each other of the rectangular light guide plate 10, as shown in FIG. Yes.
  • One is a first LED 4 a as a first light source disposed on a first end face 10 a which is one side end face of the light guide plate 10, and the other is a second end face 10 b which is the other side end face of the light guide plate 10.
  • 2nd LED4b as a 2nd light source arrange
  • the first LED 4a and the second LED 4b are disposed on the first end surface 10a and the second end surface 10b of the rectangular light guide plate 10 facing each other.
  • the illumination module 1A of the present embodiment light is incident from the first end surface 10a and the second end surface 10b of the light guide plate 10 facing each other using the first LED 4a and the second LED 4b.
  • the light emitting structure 13 is formed on the first surface 11 and the second surface 12 of the light guide plate 10. Yes.
  • each light incident from the first LED 4a and the second LED 4b guides the inside of the light guide plate 10 by the light emitting structures 13 and 13 provided on both surfaces of the light guide plate 10. A part of the light is guided to the first surface 11 or the second surface 12 side which is a light emitting surface by the light emitting structure 13 and is emitted to the outside from the first surface 11 or the second surface 12. .
  • FIG. 3 is a perspective view showing a configuration of a light emitting structure portion formed of a concave portion.
  • FIG. 4A is a cross-sectional view showing the configuration of the light guide plate viewed from the side perpendicular to the incident direction of the first light source and the light guide direction of the light when the first light source is turned on.
  • FIG. 4B is a cross-sectional view showing the configuration of the light guide plate viewed from the side perpendicular to the incident direction of the second light source and the light guide direction of the light when the second light source is turned on.
  • the light emission structure portion 13 can be composed of a plurality of concave portions formed on both surfaces of the light guide plate 10.
  • the light emission structure portion 13 including a plurality of concave portions formed on the first surface 11 and the second surface 12 which are both surfaces of the light guide plate 10 functions as a reflecting prism. For this reason, it is possible to emit light from the second surface 12 and the first surface 11 which are light emitting surfaces by reflecting the light to the light emitting surface side.
  • the light emission structure part 13 which consists of a recessed part of this Embodiment is a recessed part which fell the triangular prism sideways as shown in FIG.
  • the light-projection structure part 13 which consists of the recessed part which laid down the triangular prism formed in the 1st surface 11 of the light-guide plate 10 sideways It is a cross-sectional triangle having sides on the same plane as the first surface 11, and the inclination angles at both ends of the sides are different from each other.
  • the inclination angles of the cross-sectional triangle are ⁇ and ⁇ , and the side walls of the inclination angle ⁇ are opposed to the first LED 4a side in all of the light emitting structures 13 arranged in a plurality on the first surface 11.
  • the side wall of the inclination angle ⁇ faces the second LED 4b.
  • the inclination angle ⁇ of the cross-sectional triangle is, for example, an acute angle
  • the inclination angle ⁇ of the cross-sectional triangle is, for example, a right angle or an acute angle close to a right angle. Therefore, the inclination angle ⁇ ⁇ the inclination angle ⁇ .
  • the light emitting structure 13 formed of a concave portion formed by tilting the triangular prism formed on the first surface 11 has a side wall on the side facing the second LED 4b such that the inclination angle ⁇ of the side wall facing the second LED 4b is the side wall on the side facing the second LED 4b. Is smaller than the inclination angle ⁇ .
  • the side wall surface of the light emitting structure portion 13 formed of a recess is formed in an asymmetric shape with respect to the first LED 4a side and the second LED 4b side.
  • the second surface 12 of the light guide plate 10 is also formed with a plurality of light emitting structure portions 13 each including a concave portion in which a triangular prism is tilted sideways. ing.
  • the light emitting structure 13 composed of a recess formed by tilting the triangular prism formed on the second surface 12 of the light guide plate 10 is a recess formed by tilting the triangular prism formed on the first surface 11 of the light guide plate 10 horizontally.
  • the inclination angles ⁇ ′ and ⁇ ′ are opposite to each other.
  • the light emitting structure portion 13 formed of a concave portion formed by tilting the triangular prism formed on the second surface 12 has a side wall on the side facing the first LED 4a and the side wall on the side facing the second LED 4b. It is smaller than the wall inclination angle ⁇ ′.
  • the inclination angles ⁇ and ⁇ and the inclination angles ⁇ ′ and ⁇ ′ are 90 degrees or less, and the emission angles of the light emitted from the first surface 11 and the second surface 12 that are light emission surfaces are the same. It is preferable from the viewpoint of ease of control and drilling.
  • the inclination angles ⁇ and ⁇ and the inclination angles ⁇ ′ and ⁇ ′ of the sidewalls of the recesses in the light emitting structure 13 are different in two directions, that is, the direction of light from the first LED 4a and the direction of light from the second LED 4b. Thus, it is possible to make a difference in the light emission characteristics.
  • the light emission direction can be made different from the light in the two directions by the difference between the inclination angles ⁇ ⁇ ⁇ and the inclination angles ⁇ ′ and ⁇ ′.
  • the first surface which is a light emitting surface 11 and the second surface 12 can be made to have different light emission rates.
  • the side wall of the light emitting structure portion 13 formed of a recess formed on the second surface 12 has an inclination angle ⁇ ′ facing the first LED 4 a on the second LED 4 b. It is smaller than the opposing inclination angle ⁇ ′. For this reason, the reflection in the vertical direction increases, and the amount of light extracted from the first surface 11 increases.
  • the inclination angle ⁇ facing the first LED 4a is larger than the inclination angle ⁇ facing the second LED 4b
  • the side wall of the light emitting structure portion 13 formed of the concave portion formed on the first surface 11 remains as it is. It passes through part 13. Therefore, light is not emitted from the light guide plate 10 or the amount of light extracted from the second surface 12 is small.
  • the side wall of the light emitting structure portion 13 formed of the concave portion formed on the first surface 11 has an inclination angle ⁇ facing the second LED 4b and facing the first LED 4a. Is smaller than the inclination angle ⁇ . For this reason, the reflection in the vertical direction increases, and the amount of light extracted from the second surface 12 increases.
  • the side wall of the light emitting structure portion 13 formed of the concave portion formed on the second surface 12 has the inclination angle ⁇ ′ facing the second LED 4b larger than the inclination angle ⁇ ′ facing the first LED 4a. The light passes through the emission structure 13. Accordingly, light is not emitted from the light guide plate 10 or the amount of light extracted from the first surface 11 is small.
  • FIGS. 5A, 5B, and 5C show the light emitting structure 13 formed of a prism that is inclined at an inclination angle ⁇ with respect to the incident light from the first end surface 10a as the first light incident surface.
  • (D), (e), and (f) of FIG. 5 show the light emitting structure 13 formed of a prism that is inclined at an inclination angle ⁇ with respect to incident light from the second end face 10b as the second light incident surface.
  • FIGS. 5A to 5F It is sectional drawing which shows the locus
  • the inclination angle formed between the second surface 12 as the second light exit surface and the side wall surface facing the first end surface 10a as the first light incident surface is ⁇ , and the second surface as the second light exit surface
  • the light incident on the light guide plate 10 from the first end face 10a, which is the first light incident surface is totally reflected on the side wall surface with the inclination angle ⁇ . Is done. Thereby, it becomes the light ray radiate
  • FIG. 5C when the light incident on the light guide plate 10 from the first end surface 10a which is the first light incident surface is not totally reflected on the side wall surface with the inclination angle ⁇ .
  • the light passes through the side wall surface with the inclination angle ⁇ , passes through the side wall surface with the inclination angle ⁇ , and is incident again on the light guide plate 10. As a result, the light becomes a light beam that does not reach the light output from the light guide plate 10.
  • the light incident on the light guide plate 10 from the second end face 10b which is the second light incident surface is transmitted through the side wall surface having the inclination angle ⁇ .
  • the transmitted light is incident again on the light guide plate 10 from the side wall surface of the inclination angle ⁇ as shown in FIGS. 5D and 5E or, as shown in FIG. 5F, the inclination angle.
  • the light is totally reflected by the side wall surface ⁇ and becomes a light beam emitted from the second surface 12.
  • the light incident on the light guide plate 10 from the second end face 10b which is the second light incident surface is the first surface 11 which is the first light exit surface with respect to the side wall surface having the inclination angle ⁇ .
  • the light incident on the light guide plate 10 from the second end face 10b which is the second light incident surface is the first surface 11 which is the first light exit surface with respect to the side wall surface having the inclination angle ⁇ .
  • no light is emitted
  • the light is emitted to the second surface 12 which is the second emission surface. It becomes.
  • the light beam to the side wall surface with the inclination angle ⁇ of the light emitting structure portion 13 is not emitted from the first surface 11 as the first emitting surface, and is an optical path changing structure that does not contribute to the emission.
  • the side wall surface with the inclination angle ⁇ of the light emitting structure portion 13 contributes more to light extraction, whereas the side wall surface with the inclination angle ⁇ of the light emission structure portion 13 hardly contributes to light extraction. That is, it is not a take-out structure as seen from the light beam.
  • the double-sided control type illumination module 1A is realized using the above principle.
  • FIG. 6 is a graph showing the relationship between the inclination angle of the side wall of the light emitting structure portion formed of the concave portion in the illumination module 1A and the light intensity of the light extracted from the light emitting surface.
  • the relationship between the inclination angle of the side wall surface of the light emitting structure portion 13 formed of the concave portion and the light intensity of the light extracted from the first surface 11 that is the light emitting surface is guided in parallel to the light guide plate 10.
  • the light emission rate is the highest when the inclination angle of the side wall of the light emission structure portion 13 made of a recess is around 50 °, and the light emission rate is about 1/10 when the inclination angle is around 80 °. Become a rate.
  • the reason for this is that light is reflected perpendicularly to the first surface 11 that is the light emitting surface when the inclination angle is around 50 °, so that it is totally reflected on the surface of the light guide plate 10, that is, the first surface 11 that is the light emitting surface. It is because it is easy to radiate
  • the light emission rate is controlled by controlling the inclination angles ⁇ and ⁇ and the inclination angles ⁇ ′ and ⁇ ′ of the light emission structure portion 13. It becomes possible.
  • a light emitting structure comprising triangular concave portions having different inclination angles ⁇ and ⁇ of two opposite side walls facing each other. 13 is provided on both the first surface 11 which is the front surface of the light guide plate 10 and the second surface 12 which is the back surface.
  • the inclination angle ⁇ ⁇ ⁇ of the light emitting structure portion 13 formed of a triangular prism recess of the first surface 11
  • the inclination angle ⁇ ′ ⁇ ⁇ ′ of the light output structure portion 13 formed of a triangular prism recess of the second surface 12.
  • the side wall surface facing the first end surface 10a of the light emitting structure portion 13 formed of the concave portion of the triangular prism formed on the second surface 12 side which is the second emission surface has an inclination angle ⁇ with respect to the second surface 12. 'Is 45 °, for example.
  • the side wall surface facing the first end surface 10a which is the first light incident surface of the light emitting structure portion 13 formed of the concave portion of the triangular prism formed on the first surface 11 side which is the first emission surface is The inclination angle ⁇ with respect to the first surface 11 is, for example, 90 °. Therefore, the inclination angle ⁇ is larger than the inclination angle ⁇ ′.
  • the amount of the emitted light La1 from the first surface 11 which is the first emission surface is changed to the second emission surface.
  • the light quantity of the emitted light La2 from the two surfaces 12 can be increased. Note that the emitted light La2 is only slightly emitted from the second surface 12 of the light guide plate 10.
  • the illumination module 1A when the illumination module 1A is viewed from the outside of the light guide plate 10 on the first surface 11 side, the light guide plate 10 becomes a planar light-emitting body, so that the light transmission property is lost and the light shielding property is obtained. .
  • the illumination module 1A when the illumination module 1A is viewed from the outside of the light guide plate 10 on the second surface 12 side, only a small amount of light is emitted from the light guide plate 10, and thus the light guide plate 10 has translucency.
  • the outside of the light guide plate 10 on the first surface 11 side can be seen from the second surface 12 side which is the back surface of the light guide plate 10.
  • the amount of the emitted light Lb2 from the second surface 12 is set to the first surface 11. It is possible to increase the amount of the emitted light Lb1. Note that the emitted light Lb1 is only slightly emitted from the first surface 11 of the light guide plate 10.
  • the illumination module 1A when the illumination module 1A is viewed from the outside on the second surface 12 side, which is the back surface of the light guide plate 10, the light guide plate 10 becomes a planar light-emitting body, so that the light transmission property is lost and the light shielding property is obtained. It will be a thing.
  • the illumination module 1A when the illumination module 1A is viewed from the outside on the first surface 11 side of the light guide plate 10, only a small amount of light is emitted from the light guide plate 10, and thus the light guide plate 10 has translucency. The outside of the light guide plate 10 on the second surface 12 side can be seen from the first surface 11 side which is the surface of the light guide plate 10.
  • both the first surface 11 and the second surface 12 can emit light with the same amount of light.
  • the light guide plate 10 has translucency, so that the illumination module 1A has translucency.
  • the first LED 4a and the second LED 4b can control the amount of light incident on the light guide plate 10 independently. Thereby, a difference can be provided in the brightness radiate
  • the ratio of the brightness of the light emitted from the first surface 11 of the light guide plate 10 to the brightness of the light emitted from the second surface 12 can be changed to 3: 1 to 10: 1 or the like.
  • an illumination module 1A that can adjust the brightness of illumination.
  • the fact that the brightness of the illumination can be adjusted means that the light-transmitting property and the light-shielding property can be switched stepwise.
  • the second LED 4b is used for a region where the light amount is far from the first LED 4a. Can compensate for the amount of light. For example, according to the distance from the first LED 4a and the second LED 4b, it is possible to appropriately adjust the inclination angles ⁇ and ⁇ and the inclination angles ⁇ ′ and ⁇ ′ of the light emitting structure 13 formed of a triangular prism recess.
  • An illumination module 1A that can adjust the brightness of illumination can be provided.
  • the light emitting structure 13 is provided on both surfaces of the light guide plate 10.
  • the light emitting structure 13 is not necessarily limited thereto. It may be provided only on one side.
  • the light emitting structure is formed of concave portions of triangular prisms having different inclination angles ⁇ and ⁇ and inclination angles ⁇ ′ and ⁇ ′ of the two opposite sidewalls on both surfaces of the light guide plate 10.
  • Part 13 was provided.
  • the illumination module 1 ⁇ / b> B of the present embodiment is different in that the light emission structure portion 13 including different types of recesses is provided in two regions on one side of the light guide plate 10.
  • FIG. 7 is a front view which shows the structure of the illumination module 1B.
  • FIG. 7B is a cross-sectional view showing the configuration of the light guide plate 10 viewed from the side orthogonal to the incident direction of the first LED 4a, which is the first light source in the illumination module 1B, and the light guide direction of the light when the first LED 4a is turned on.
  • FIG. 7 is sectional drawing which shows the structure of the light-guide plate seen from the side orthogonal to the incident direction of 2nd LED4b which is a 2nd light source in the illumination module 1B, and the light guide direction of the light at the time of lighting of 2nd LED4b. It is.
  • the illumination module 1B of the present embodiment has a light emitting structure as a third light emitting structure in the first display region S1 as the first region on the back surface of the light guide plate 10. A portion 13 is formed. Further, the light emitting structure 13 as the fourth light emitting structure is formed in the second display area S2 as the second area which is the same surface as the first display area S1 and different from the first display area S1. ing.
  • the light emitting structure 13 as the third light emitting structure formed in the first display region S1 is on the side facing the first LED 4a as shown in FIGS.
  • the wall surface has a plurality of concave portions of a triangular prism having an inclination angle ⁇ ′.
  • the light emitting structure 13 as the fourth light emitting structure formed in the second display region S2 is inclined on the side wall surface facing the second LED 4b, as shown in FIGS.
  • the light emitting structure 13 that is the third light emitting structure and the light emitting structure 13 that is the fourth light emitting structure are at least one of the light from the first LED 4a and the light from the second LED 4b.
  • the light emission characteristics with respect to are different.
  • the first display area S1 can be illuminated as shown in FIG. 7B, and when the second LED 4b is turned on, (c) in FIG. ), The second display area S2 can be illuminated.
  • both the first LED 4a and the second LED 4b are lit, both the first display area S1 and the second display area S2 can be illuminated.
  • the emission region of the light guide plate 10 can be controlled by the output control of the first LED 4a and the second LED 4b in two directions facing each other.
  • the door lighting device 20 including the lighting module 1A of the first embodiment will be described.
  • the door lighting device 20 of the present embodiment includes the lighting module 1A of the first embodiment.
  • the lighting module 1A may be fitted to a part of the door or may constitute a door by itself.
  • the door lighting device 20 can be applied to a door for a store, an office door, or various facilities in addition to a door for a house such as an entrance door and a bath door.
  • FIG. (A) of FIG. 8 is a side view which shows the illumination state when the 1st light source is lighted in the door illuminating device 20 provided with the illumination module 1A.
  • FIG. 8B is a side view showing an illumination state when the second light source is turned on in the door illumination device 20.
  • FIG. 8C is a side view showing an illumination state when both the first light source and the second light source are turned on in the door illumination device 20.
  • the first surface 11 and the second surface 12 of the light guide plate 10 shown in FIGS. 1B and 1C are opposite to each other. .
  • the light guide plate 10 becomes a planar light emitter, and thus has no translucency and has light shielding properties. Become.
  • the door illumination device 20 is viewed from the outside on the second surface 12 side, which is the back surface of the light guide plate 10, since light is emitted from the light guide plate 10 only slightly, it has translucency, The outside of the light guide plate 10 on the first surface 11 side can be seen from the second surface 12 side which is the back surface of the light guide plate 10.
  • the light guide plate 10 becomes a planar light emitter, and therefore has no translucency and has light shielding properties. Become. Further, when the door illumination device 20 is viewed from the outside of the first surface 11 side which is the surface of the light guide plate 10, since light is emitted from the light guide plate 10 only slightly, it has translucency, The outside of the light guide plate 10 on the second surface 12 side can be seen from the first surface 11 side which is the surface of the light guide plate 10.
  • the door lighting device 20 when both the first LED 4a and the second LED 4b are turned on, as shown in FIG. 8C, the room A side on the first surface 11 side of the light guide plate 10 and the light guide plate 10 Both the second surface 12 side and the room B side are illuminated.
  • both surfaces of the first surface 11 and the second surface 12 of the light guide plate 10 are planar light emitters, the translucent property is lost even when the door lighting device 20 is viewed from any outside. It will have.
  • the door illuminating device 20 will have light-shielding property from the outer side of any one of the light-guide plates 10, and translucency from the other outer side.
  • the door lighting device 20 has a light shielding property to both outsides.
  • the first LED 4a and the second LED 4b can control the amount of light incident on the light guide plate 10 independently. Thereby, a difference can be provided in the brightness radiate
  • the door lighting device 20 capable of adjusting the brightness of the lighting can be provided.
  • the fact that the brightness of the illumination can be adjusted means that the light-transmitting property and the light-shielding property can be switched stepwise.
  • the second LED 4b since light is incident on the light guide plate 10 from two directions using the first LED 4a and the second LED 4b, the second LED 4b emits light in a region where the amount of light far from the first LED 4a is insufficient. Can be supplemented. For this reason, light can be sufficiently emitted from the entire region of the first surface 11 of the light guide plate 10, so that the light shielding property of the entire surface can be ensured. Furthermore, light is incident on the light guide plate 10 from two directions using the first LED 4a and the second LED 4b, rather than increasing the amount of power and making the light amount sufficient even in a region where the light amount in the distance is insufficient only by the first LED 4a. As a result, the amount of power is reduced.
  • Embodiment 4 The following will describe another embodiment of the present invention with reference to FIG.
  • the configurations other than those described in the present embodiment are the same as those in the first embodiment and the second embodiment.
  • members having the same functions as those shown in the drawings of Embodiment 1 and Embodiment 2 are given the same reference numerals, and explanation thereof is omitted.
  • FIGS. 9 (a) and 9 (b) a case where the lighting modules 1A and 1B described in the first and second embodiments are applied to a window lighting device will be described with reference to FIGS. 9 (a) and 9 (b).
  • 9A is a cross-sectional view showing a state where the illumination module is turned off in the window illumination device
  • FIG. 9B is a cross-sectional view showing a state where the illumination module is turned on in the window illumination device. is there.
  • the window illumination device 30 of the present embodiment is disposed on the ceiling 31 and includes any one of the illumination modules 1A and 1B.
  • the first surface 11 of the light guide plate 10 of the illumination modules 1A and 1B is located on the indoor side, and the second surface 12 is located on the outdoor side.
  • the window lighting device 30 functions as a skylight when turned off, and functions as room lighting when turned on. Light emitted from either the first LED 4a or the second LED 4b, or from both the first LED 4a and the second LED 4b is hardly emitted to the outdoor side, so that there is little loss even when the window illumination device 30 is used as room illumination.
  • the window illumination device 30 can be daylighted because it has translucency when turned off, but the amount of light reaching the interior can be controlled by the light emitting structure 13 depending on the direction of sunlight. For example, winter sunlight that is incident on the light guide plate 10 at a small angle has high transmittance of the light guide plate 10, and summer sunlight that is incident on the light guide plate 10 at a large angle is transmitted through the light guide plate 10.
  • the shape of the concave portion of the light emitting structure portion 13 may be defined so that the rate is low.
  • the shape of the concave portion of the light emitting structure 13 may be defined so that the transmitted light always has the same angle component even if the direction of sunlight changes. Thus, it is possible to irradiate a certain place with light collected regardless of the angle of sunlight, and conversely, sunlight can be collected while avoiding an area where light is not desired to be irradiated.
  • the protective glass 3 may have an infrared cut function or an ultraviolet cut function.
  • daylighting and power generation can be performed in the daytime, and the generated power in the daytime can be used as illumination. . Further, it is possible to contribute to low power consumption by collecting the lost light leaking to the outdoor side with a solar cell.
  • the window lighting device 30 of the present embodiment by pasting the window lighting device 30 of the present embodiment on all or part of mirrors installed in, for example, a wash basin and a bathroom, the function as a normal mirror is obstructed because it is transparent when turned off. None do.
  • the pasting portion functions as surface illumination, so that it is possible to provide a function as illumination that can irradiate light from the closest position to a portion that is desired to be viewed with a mirror.
  • FIGS. 10 (a) and 10 (b) of FIG. 10 is sectional drawing which shows schematic structure of the electrical decoration signboard 40 in this Embodiment
  • (b) of FIG. 10 is a front view which shows the structure of the said electrical decoration signboard 40. As shown in FIG.
  • the electric signboard 40 includes cover members 42 and 42, frames 43 and 43 provided on the upper and lower portions, an illumination module 1C, and an image. Are provided as image layers 44a and 44b, protective plates 45 and 45 for protecting the image films 44a and 44b, and a control unit 46.
  • two light diffusion members 52 and 52 are arranged so as to sandwich the light guide plate 10. Further, a light source group 53 is disposed on one side of the light guide plate 10, and the frames 43 and 43 sandwiching the light diffusion members 52 and 52 are attached so as to cover the light source group 53.
  • the light source group 53 is connected to the control unit 46.
  • the illumination module 1 ⁇ / b> C includes the light guide plate 10, light diffusing members 52 and 52, and a light source group 53.
  • the light source group 53 is provided on a pair of sides facing each other in the longitudinal direction of the light guide plate 10, and the light source group 53 is mounted on the circuit board 53b and the circuit board 53b with a space therebetween.
  • a plurality of first LEDs 4a and second LEDs 4b As a plurality of first LEDs 4a and second LEDs 4b.
  • the present invention is not necessarily limited to this, and for example, a fluorescent tube or other light source can be employed.
  • the light guide plate 10 has a first end face 10a on which light from the first LED 4a is incident and a second end face 10b on which light from the second LED 4b is incident. Furthermore, the light guide plate 10 has a plurality of light emitting structures 13 each composed of the above-described triangular prism recesses on the first surface 11 and the second surface 12 in the same manner as the illumination module 1A. Therefore, the light guide plate 10 causes the light incident from the first end surface 10a and the second end surface 10b to be totally reflected between the first surface 11 and the second surface 12, and the inside of the light guide plate 10 to be reflected. Propagate. Then, the total reflection condition is broken due to scattering by the light emitting structure 13, and light is emitted from the first surface 11 and the second surface 12.
  • the light diffusing members 52 and 52 have an effect of diffusing light.
  • the light diffusing members 52 and 52 are based on polymethyl methacrylate (PMMA), polycarbonate (PC), polystyrene (PS), and the like, and contain a diffusing agent. Things are used.
  • the control unit 46 can control ON / OFF and light amount output of the first LED 4a and the second LED 4b.
  • the outputs of the first LED 4a and the second LED 4b can be controlled by adjusting the amount of current, pulse width modulation (PWM), or the like.
  • PWM pulse width modulation
  • the image films 44a and 44b are films on which an image to be displayed on the electric signboard 40 is printed, and the material is not particularly limited as long as the image is printed.
  • a material having polyethylene terephthalate (PET) as a base material and a fixing agent or the like applied to the surface of the polyethylene terephthalate (PET) film so that the printing ink is easily fixed is used.
  • the protective plates 45 and 45 are intended to prevent the image films 44a and 44b from being scratched or soiled.
  • the protective plates 45 and 45 are made of a transparent material having a high light transmittance so as not to damage the images of the image films 44a and 44b to be protected.
  • PMMA acrylic
  • PC polycarbonate
  • PS polystyrene
  • PC is preferable from the viewpoint of scratch resistance and environmental resistance.
  • either the first LED 4a or the second LED 4b, or both the first LED 4a and the second LED 4b Lights up. Accordingly, light is emitted from either the first surface 11 or the second surface 12 of the light guide plate 10 or from both the first surface 11 and the second surface 12.
  • the display of the image film 44a can be seen from the left side of the electric signboard 40 in FIG.
  • the emitted light from the second surface 12 of the light guide plate 10 is emitted from the light diffusion member 52 and the image film.
  • the light is emitted to the outside through 44b.
  • the display of the image film 44b can be seen from the right side of the electric signboard 40 in FIG.
  • the display of the image film 44a can be seen from the left side of the electric signboard 40 in FIG.
  • the display of the image film 44b can be seen from the right side of the electric signboard 40 in FIG.
  • the lighting module 1C of the present embodiment can also be applied to the electric signboard 40.
  • the electrical signboard 40 displayed on both sides using the illumination module 1A and the illumination module 1C was demonstrated, it is not necessarily this, The electrical signboard 40 displayed on one side using the illumination module 1B is used. It is also possible to apply.
  • the illumination modules 1A, 1B, and 1C have translucency that guides light incident from the first end surface 10a and the second end surface 10b facing each other and emits the light from the light exit surface.
  • the illumination module includes a second light source (second LED 4b) that makes light incident on the second end face 10b, and the light guide member (light guide plate 10) is an interior of the light guide member (light guide plate 10).
  • a light emitting structure 13 that guides a part of the light that guides the light to the light emitting surface and emits the light to the outside from the light emitting surface is at least of the light guide member (light guide plate 10) that is the surface opposite to the light emitting surface
  • the light emitting structure 13 is provided on the back surface (second surface 12).
  • the amount of light emitted from the light emitting surface with respect to the amount of light guided through the light guide member is The light emission characteristics are different due to the light emission characteristics having different ratios, and the first light source (first LED 4a) and the second light source (second LED 4b) have the light guide member (light guide plate 10).
  • the amount of light incident on the inside can be controlled independently.
  • illumination module 1A * 1B * 1C is 1st which mutually opposes a light guide member (light guide plate 10) using 1st light source (1st LED4a) and 2nd light source (2nd LED4b).
  • the light enters from the end face 10a and the second end face 10b.
  • the light emission structure part 13 is formed in the at least back surface (2nd surface 12) of the light guide member (light guide plate 10)
  • the 1st light source (1st LED4a) and 2nd light source (2nd LED4b) Each light incident from the light guides the inside of the light guide member (light guide plate 10), a part of which is guided to the light output surface side by the light output structure 13, and is output to the outside from the light output surface.
  • the light emitting structure 13 when the light emitting structure 13 is provided only on the back surface (second surface 12) of the light guide member (light guide plate 10), the inside of the light guide member (light guide plate 10) is guided. Most of the light that is emitted is emitted from the light exit surface of the front surface (first surface 11) of the light guide member (light guide plate 10) and slightly from the back surface (second surface 12) of the light guide member (light guide plate 10). It is only emitted. For this reason, when the illumination modules 1A, 1B, and 1C are viewed from the outside of the light output surface side of the surface (first surface 11) of the light guide member (light guide plate 10), the light guide member (light guide plate 10).
  • the illumination modules 1A, 1B, and 1C are viewed from the outside on the back surface (second surface 12) side of the light guide member (light guide plate 10), the light guide member (light guide plate 10) Since light is not emitted, it has translucency, and light from the back surface (second surface 12) side of the light guide member (light guide plate 10) to the surface (first surface 11) of the light guide member (light guide plate 10). The outside on the exit surface side can be seen.
  • the light guide member (guide) is provided. Since light is emitted from both the front surface (first surface 11) and the back surface (second surface 12) of the light plate 10), the front surface (first surface 11) and the back surface (second surface) of the light guide member (light guide plate 10). Both sides of the surface 12) have light shielding properties.
  • the light-projection structure part 13 is the inside of the said light guide member (light guide plate 10) with the light from a 1st light source (1st LED4a) and the light from a 2nd light source (2nd LED4b).
  • the light emission characteristics are different because the ratio of the light quantity of the light emitted from the light emission surface to the light quantity of the light guiding the light is different.
  • the light emission characteristic is, for example, a light emission angle with respect to a light emission surface or a light emission rate with respect to a light guide component. Thereby, a difference can be provided in the brightness radiate
  • the ratio of the light quantity of the light emitted from the light emission surface to the light quantity of the light guided through the inside of the light guide member (light guide plate 10) can be adopted as the light emission characteristic of the light emission structure portion 13. .
  • the inclination angles ⁇ ′ and ⁇ ′ of the side wall surfaces of the concave portions of the triangular prisms formed on the back surface (second surface 12) of the light guide member (light guide plate 10) are different from each other.
  • the ratio of the amount of light emitted from the light exit surface to the amount of light guided through the inside of the light guide member (light guide plate 10) can be varied.
  • the first light source (first LED 4a) and the second light source (second LED 4b) can independently control the amount of light incident on the light guide member (light guide plate 10). ing. Thereby, a difference can be provided in the brightness radiate
  • the illumination modules 1A, 1B, and 1C that can adjust the brightness of the illumination.
  • the fact that the brightness of the illumination can be adjusted means that the light-transmitting property and the light-shielding property can be switched stepwise.
  • light is incident on the light guide member (light guide plate 10) from two opposite directions using the first light source (first LED 4a) and the second light source (second LED 4b).
  • the light quantity can be supplemented by the second light source (second LED 4b) in the region where the light quantity far from the light source (first LED 4a) is insufficient. For this reason, since light can be fully emitted from the entire region on the light emission surface of the light guide member (light guide plate 10), light shielding properties of the entire surface can be ensured.
  • the first light source (first LED 4a) and the second light source are more than the amount of power that is increased to increase the amount of power even in a region where the light amount in the distance is insufficient only by the first light source (first LED 4a).
  • the amount of electric power is consequently reduced.
  • the light emission characteristics can be easily controlled as compared with the system in which the light emission characteristics are controlled by moving a movable member such as a movable shutter.
  • the said light emission structure part 13 is formed in the back surface (2nd surface 12) of the said light guide member (light guide plate 10).
  • the side wall surface of the light emitting structure formed of the recesses is formed in an asymmetric shape with respect to the first light source side and the second light source side.
  • the light emission structure which consists of several recessed part formed in the back surface (2nd surface 12) of this light guide member (light guide plate 10) which is the other side to the light emission surface of a light guide member (light guide plate 10). Since the part 13 functions as a reflecting prism, the light can be emitted from the light emitting surface by reflecting the light toward the light emitting surface.
  • the side wall surface of the light emission structure part 13 which consists of a recessed part shall be formed in the mutually asymmetrical shape by the 1st light source (1st LED4a) side and the 2nd light source (2nd LED4b) side,
  • the inclination angle of the side wall of the light emitting structure 13 formed of the concave portion is made different in two directions, that is, the direction of light from the first light source (first LED 4a) and the direction of light from the second light source (second LED 4b). be able to.
  • the inclination angles ⁇ and ⁇ and the inclination angles ⁇ ′ and ⁇ ′ of the sidewalls of the recesses are set based on the direction of the light from the first light source (first LED 4a) and the light from the second light source (second LED 4b).
  • the light emission characteristics are different between the light from the first light source (first LED 4a) and the light from the second light source (second LED 4b). It is possible.
  • the light from the first light source (first LED 4a) and the second light source (second LED 4b) can be formed with a simple configuration in which a recess is formed on the back surface (second surface 12) of the light guide member (light guide plate 10).
  • the light emission structure portion 13 having a light emission characteristic different from that of the light from can be formed.
  • the side wall of the recess in the light emitting structure portion 13 is the back surface (second surface 12) of the light guide member (light guide plate 10).
  • the side wall of the recess in the light emitting structure portion 13 is the back surface (second surface 12) of the light guide member (light guide plate 10).
  • the inclination angles ⁇ ′ and ⁇ ′ are different between the side wall on the first light source (first LED 4a) side and the side wall on the second light source (second LED 4b) side.
  • the inclination angles ⁇ ′ and ⁇ ′ of the sidewalls of the recesses of the light emitting structure 13 are determined by the direction of light from the first light source (first LED 4a) and the direction of light from the second light source (second LED 4b).
  • the difference in the two directions can cause a difference in the light emission characteristics.
  • the light emission direction can be made different from the light in the two directions due to the difference in the inclination angles ⁇ ′ and ⁇ ′.
  • the light emission rate from the light emission surface can be made different.
  • the light emission angle and the light emission rate can be controlled simultaneously.
  • the surface (first surface 11) of the light guide member (light guide plate 10) is the first light exit surface.
  • a second light emitting surface as the light emitting surface is formed on the back surface (second surface 12) of the light guide member (light guide plate 10), and the light guide member.
  • the first light emitting structure 13 that guides a part of light guided inside the (light guide plate 10) to the first light emitting surface side and emits the light to the outside from the first light emitting surface.
  • a light emitting structure 13 is formed on the second light emitting surface, and a part of the light guided inside the light guide member (light guide plate 10) is guided to the second light emitting surface side.
  • the second light emitting structure 13 that is the light emitting structure 13 that emits the light from the second light emitting surface to the outside
  • the first light emitting structure portion 13 and the second light emitting structure portion 13 are formed on the first light emitting surface, and the light from the first light source (first LED 4a) and the first light emitting structure portion 13
  • the light emission characteristics for at least one of the light from the two light sources (second LEDs 4b) are different.
  • the light emitting structures 13 of different types are arranged on both the front surface (first surface 11) and the back surface (second surface 12) of the light guide member (light guide plate 10).
  • the amount of light emitted from the front surface (first surface 11) and back surface (second surface 12) of the light guide member (light guide plate 10) is set to the direction of the light from the first light source (first LED 4a) and the second. It can be controlled by output control of the first light source (first LED 4a) and the second light source (second LED 4b) in two directions opposite to each other with respect to the direction of light from the light source (second LED 4b).
  • the illumination module 1B when used in a window illumination device that also functions as a window, for example, light emission from the front surface (first surface 11) and the rear surface (second surface 12) of the light guide member (light guide plate 10).
  • a window illumination device that also functions as a window
  • light emission from the front surface (first surface 11) and the rear surface (second surface 12) of the light guide member (light guide plate 10) By controlling the amount, visibility to the opposite side of the window, that is, so-called see-through property can be controlled.
  • the lighting module 1A is used as a door lighting device 20 that requires privacy such as a bathroom, for example, it can be used as door lighting that is not visible from the outside during bathing.
  • a third light emitting structure 13 that is the light emitting structure 13 is formed in S1), and is the same surface as the first area (first display area S1), and the first area (first The fourth light emitting structure 13 which is the light emitting structure 13 is formed in a second area (second display area S2) different from the first display area S1), and the third light emitting structure 13 is formed.
  • the fourth light emitting structure 13 have different light emitting characteristics for at least one of the light from the first light source (first LED 4a) and the light from the second light source (second LED 4b). It is characterized by that.
  • different types of light emitting structures 13 are arranged in different regions on the same surface of the light guide member (light guide plate 10).
  • the output region of the light guide member (light guide plate 10) can be controlled by the output control of the first light source (first LED 4a) and the second light source (second LED 4b) in two directions facing each other.
  • the door lighting device 20 is characterized by including the lighting modules 1A, 1B, and 1C described above.
  • the door illuminating device 20 provided with illumination module 1A * 1B * 1C which can adjust the brightness of illumination can be provided.
  • the lighting modules 1A, 1B, and 1C are used in the door lighting device 20 that also functions as a bath door, the front surface (first surface 11) and the back surface (second surface) of the light guide member (light guide plate 10).
  • the front surface (first surface 11) and the back surface (second surface) of the light guide member (light guide plate 10) By controlling the light emission amount of the surface 12), it is possible to provide the door lighting device 20 that can control the visibility on the opposite side of the door, that is, the so-called see-through property.
  • the window illumination device 30 is characterized by including the illumination modules 1A, 1B, and 1C described above.
  • the window illuminating device 30 provided with illumination module 1A * 1B * 1C which can adjust the brightness of illumination can be provided.
  • the window illumination device 30 that also functions as a window, the front surface (first surface 11) and the back surface (second surface) of the light guide member (light guide plate 10).
  • the window illumination device 30 capable of controlling the visibility on the opposite side of the window, that is, the so-called see-through property.
  • the electric signboard 40 is characterized by including the illumination modules 1A, 1B, and 1C described above.
  • an electric signboard 40 including the lighting modules 1A, 1B, and 1C.
  • the present invention includes a light guide member that guides light incident from two end surfaces facing each other and emits the light from the light output surface, a first light source that inputs light to the first end surface of the light guide member, and a light guide.
  • the present invention can be applied to an illumination module including a second light source that makes light incident on the second end face of the optical member.
  • the lighting module is, for example, a door lighting device attached to a door, a window lighting device for a window including a skylight, or a housing building material such as a partition other than a door or a window, a wall surface or floor surface of a building, a cupboard or a kitchen storage. It can be applied to lighting devices such as furniture such as furniture, gate pillars, or public exteriors (fences, signs, bulletin boards, guide lights, handrails, etc.), or electric signs.
  • Door illumination device 30
  • Window illumination device 40 Illuminated signboard 44a Image film 44b Image film 52

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Planar Illumination Modules (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un module d'éclairage (1A) muni d'une plaque de guidage de lumière (10) qui présente une unité structurelle émettrice de lumière (13) sur laquelle est incidente une lumière en provenance d'une première surface d'extrémité (10a) et d'une deuxième surface d'extrémité (10b) qui se font mutuellement face, et qui émet une partie de la lumière guidée en interne vers l'extérieur depuis une première surface (11), ladite unité structurelle émettrice de lumière (13) se trouvant dans une deuxième surface (12) qui est au moins la surface arrière de la plaque de guidage de lumière (10), laquelle est la surface faisant face à la première surface (11). L'unité structurelle émettrice de lumière (13) possède des caractéristiques d'émission de lumière différentes pour la lumière provenant d'une première LED (4a) et la lumière provenant d'une deuxième LED (4b), ce qui résulte du fait de posséder des propriétés d'émission de lumière ayant des ratios de volumes de lumière émise différents. La première LED (4a) et la deuxième LED (4b) peuvent commander indépendamment leurs volumes de lumière incidente.
PCT/JP2013/083501 2013-01-30 2013-12-13 Module d'éclairage WO2014119148A1 (fr)

Applications Claiming Priority (2)

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JP2013015578A JP2014146551A (ja) 2013-01-30 2013-01-30 照明モジュール
JP2013-015578 2013-01-30

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WO2014119148A1 true WO2014119148A1 (fr) 2014-08-07

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Cited By (3)

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EP3608590A1 (fr) * 2018-08-09 2020-02-12 Display Light Dalle d'eclairage ultraplate
WO2020247233A1 (fr) 2019-06-04 2020-12-10 Corning Incorporated Fenêtre avec conduit de lumière et structures de diffusion de lumière
EP4191122A4 (fr) * 2020-07-28 2024-08-07 Nitto Denko Corp Dispositif d'éclairage de surface, espace comportant un dispositif d'éclairage de surface, et procédé d'éclairage

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JP6376385B2 (ja) * 2014-09-09 2018-08-22 パナソニックＩｐマネジメント株式会社 通路用照明装置
JP6663679B2 (ja) * 2015-10-16 2020-03-13 不二サッシ株式会社 照明器具を備えたドア
CN105501032B (zh) * 2015-12-03 2017-08-08 福耀玻璃工业集团股份有限公司 一种可发光的夹层玻璃
JP2017195176A (ja) * 2016-04-15 2017-10-26 ミネベアミツミ株式会社 光学部材、面状照明装置、及び加工方法
WO2019102959A1 (fr) * 2017-11-21 2019-05-31 富士フイルム株式会社 Fenêtre d'éclairage à un seul côté
JP7075620B2 (ja) * 2018-05-10 2022-05-26 大日本印刷株式会社 発光装置、組立キット、建材パネル、構造体、及び、構造体の製造方法
JP7382593B2 (ja) * 2019-07-29 2023-11-17 パナソニックＩｐマネジメント株式会社 照明装置
FI129781B (en) 2020-10-26 2022-08-31 Teknologian Tutkimuskeskus Vtt Oy Device for checking visibility
FI129780B (en) 2020-10-26 2022-08-31 Teknologian Tutkimuskeskus Vtt Oy Optical arrangement to arrange privacy

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JP2011129251A (ja) * 2009-12-15 2011-06-30 Colcoat Kk 発光装置
JP2012195171A (ja) * 2011-03-16 2012-10-11 Lenovo Singapore Pte Ltd バックライト装置及び表示装置

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JP2011003281A (ja) * 2009-06-16 2011-01-06 Koito Mfg Co Ltd 車両用灯具
JP2011129251A (ja) * 2009-12-15 2011-06-30 Colcoat Kk 発光装置
JP2012195171A (ja) * 2011-03-16 2012-10-11 Lenovo Singapore Pte Ltd バックライト装置及び表示装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3608590A1 (fr) * 2018-08-09 2020-02-12 Display Light Dalle d'eclairage ultraplate
WO2020030451A1 (fr) * 2018-08-09 2020-02-13 Display Light Dalle d'eclairage ultraplate
FR3084926A1 (fr) * 2018-08-09 2020-02-14 Display Light Dalle d'eclairage ultraplate
US11994708B2 (en) 2018-08-09 2024-05-28 Display Light Ultra-flat lighting panel
WO2020247233A1 (fr) 2019-06-04 2020-12-10 Corning Incorporated Fenêtre avec conduit de lumière et structures de diffusion de lumière
EP3980840A4 (fr) * 2019-06-04 2023-06-28 Corning Incorporated Fenêtre avec conduit de lumière et structures de diffusion de lumière
EP4191122A4 (fr) * 2020-07-28 2024-08-07 Nitto Denko Corp Dispositif d'éclairage de surface, espace comportant un dispositif d'éclairage de surface, et procédé d'éclairage

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