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WO2013153837A1 - Guide de lumière, dispositif émetteur de lumière, corps structurel pour matériau de construction, système d'éclairage de porte et porte - Google Patents

Guide de lumière, dispositif émetteur de lumière, corps structurel pour matériau de construction, système d'éclairage de porte et porte Download PDF

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Publication number
WO2013153837A1
WO2013153837A1 PCT/JP2013/051966 JP2013051966W WO2013153837A1 WO 2013153837 A1 WO2013153837 A1 WO 2013153837A1 JP 2013051966 W JP2013051966 W JP 2013051966W WO 2013153837 A1 WO2013153837 A1 WO 2013153837A1
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WO
WIPO (PCT)
Prior art keywords
light
light guide
guide plate
emitted
door
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/JP2013/051966
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English (en)
Japanese (ja)
Inventor
栗本　英治
和也 生田
花野　雅昭
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.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of WO2013153837A1 publication Critical patent/WO2013153837A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • 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
    • G02B6/0073—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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0095—Light guides as housings, housing portions, shelves, doors, tiles, windows, or the like
    • 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
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B2009/2417—Light path control; means to control reflection
    • 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
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners

Definitions

  • the present invention relates to a light guide having translucency and a light emitting device including the light guide.
  • LEDs light emitting diodes
  • lighting devices using LEDs have low power consumption and long life
  • lighting devices using LEDs have been developed instead of lighting devices using light bulbs.
  • a lighting door is disclosed in Patent Document 1.
  • the light-transmitting part can be used not only as a normal lighting window but also as a night light.
  • the window is formed using transparent glass, the daylighting is good, but it is easy to see the inside of the room or the house from the outside or the outside, which is not preferable from the viewpoint of privacy protection.
  • the lighting door described in Patent Document 1 is intended to illuminate the inside and outside of the space partitioned by the lighting door, and does not take into account that an indoor state can be seen from the outside through the light transmitting part.
  • the present invention has been made to solve the above-described problems, and its object is to provide a translucent light guide that can reduce the visibility when an object inside the structure is viewed from the outside of the structure. And providing a light emitting device including the light guide.
  • a light guide includes a light guide that guides light emitted from a light source,
  • the light guide unit has a first surface and a second surface facing the first surface, It has an alignment control structure that makes the alignment characteristics of the light emitted from the first surface different from the alignment characteristics of the light emitted from the second surface.
  • the light emitted from the light source propagates inside the light guide and is emitted from the first surface and the second surface which is the back surface thereof. At this time, the alignment characteristics of the light emitted from the first surface and the alignment characteristics of the light emitted from the second surface are different from each other due to the alignment control structure.
  • the light guide part has translucency. Therefore, if the light source is not turned on, the light guide part can be used as a window member for lighting.
  • the light guide portion may be transparent or translucent. Moreover, it may be colored as well as colorless and transparent, and it may be designed to have a design in a light-off state.
  • the orientation characteristics of the light emitted from the first surface is determined in advance based on the eye line assumed by the viewer, so that the light source is turned on from the first surface side to the opposite side. Visibility when a positioned object is viewed along the line of sight can be effectively reduced.
  • this light guide is used as a front door window, it is possible to realize a privacy protection function in which the second surface cannot be seen from the first surface when the light guide is turned on.
  • the viewer is a person who is assumed to visually recognize an object located on the second surface side from the first surface side. For example, the viewer is directed to a house equipped with the light guide. You are a visitor.
  • the above-mentioned privacy protection function is obtained by the light emitted from the second surface. Can reduce the possibility of damage. This is because when light having the same orientation characteristics as light emitted from the first surface (especially light in the front direction) is emitted from the second surface, an object located on the second surface side becomes the light. This is because, when illuminated, the object may be easily visible from the first surface side (particularly the front surface).
  • the light beam emitted from the first surface is different from the light beam emitted from the second surface.
  • the privacy protection effect can be increased.
  • the alignment control structure is preferably divided into a plurality of regions.
  • the alignment characteristics can be changed for each of the plurality of regions of the alignment control structure, and the functionality of the light guide can be enhanced. Therefore, for example, light alignment for privacy protection can be performed in the first region of the alignment control structure, and light used as illumination light can be aligned in the second region.
  • the light guide has a first end and a second end different from the first end
  • the orientation control structure includes a first reflection surface that reflects light incident from the first end portion, and a second reflection surface that reflects light incident from the second end portion. It is preferable.
  • the alignment control structure reflects the light incident from the first end of the light guide unit by the first reflecting surface and reflects the light incident from the second end of the light guide unit to the first end. Reflected by the reflection surface 2.
  • the reflecting surface may be formed only from a plane, may be formed from a curved surface, or may be formed from a composite surface of a plane and a curved surface.
  • the shape of the light guide can be freely changed according to the expression of the functionality.
  • the light source preferably includes a light emitting diode.
  • LED light emitting diode
  • a light emitting device including the light guide and a building material structure including the light emitting device are also included in the technical scope of the present invention.
  • the building material structure include doors, partitions, wall materials, windows, ceiling materials, and external light members.
  • a door according to the present invention includes the above light emitting device, It is preferable that a plurality of the light emitting devices are arranged with respect to the door, and the orientation characteristics of the plurality of light emitting devices are different from each other.
  • the door illumination system of the present invention includes a door including the light emitting device, A sensor for detecting the presence of an object, The light-emitting device is preferably turned on when the sensor detects the object.
  • the light-emitting device can emit light only when a person approaches the door, and the power consumption can be reduced by turning off the light at other times. It is also advantageous in terms of crime prevention.
  • a light guide according to the present invention includes a light guide that guides light emitted from a light source, and the light guide includes a first surface and a second surface that faces the first surface. And an alignment control structure that makes the alignment characteristics of the light emitted from the first surface different from the alignment characteristics of the light emitted from the second surface. .
  • a light guide having functionality can be realized, and among them, an effect that a translucent member having a privacy protection function can be realized.
  • FIG. 5 is a cross-sectional view of the prism cut along a plane perpendicular to the second surface and perpendicular to the second surface.
  • (A) is a figure which shows the luminance distribution of the illumination light in the outdoors when LED is turned on
  • (b) is a figure which shows the luminance distribution of the illumination light in the indoor when LED is turned on. It is sectional drawing which shows the basic structure of the illumination module which concerns on one Example of this invention. It is a figure for demonstrating the space
  • (A) is a figure for demonstrating the effect of the said illumination module in the state which does not light LED
  • (b) is a figure for demonstrating the effect of the said illumination module in the state which lighted LED. It is a figure which shows the structure of the light-guide plate and light source with which the illumination module which concerns on another embodiment of this invention is provided.
  • (A) And (b) is sectional drawing which shows the shape of the prism formed in the light-guide plate with which the said illumination module is provided.
  • (A) And (b) is a figure which shows the emission direction of the light at the time of lighting one of the two LED bars with which the said illumination module is equipped.
  • (A) And (b) is a figure which shows the emission direction of the light at the time of lighting the other of the two LED bars with which the said illumination module is equipped.
  • (A) is a front view which shows the structure of the illumination module which concerns on another embodiment of this invention
  • (b) is a side view of the said illumination module.
  • (A) is a front view which shows arrangement
  • (b) is a side view which shows arrangement
  • (A) is a front view which shows the structure of the illumination module which concerns on another embodiment of this invention
  • (b) is a side view which shows the orientation direction of the light radiate
  • (A) And (b) is a figure which shows the structure of the illumination module which concerns on another embodiment of this invention
  • (a) is a figure which shows the state which the said illumination module has light-extinguished
  • (b ) Is a diagram showing a state in which the illumination module is lit.
  • a lighting module (light emitting device, lighting device) 1 attached to a door will be described as an embodiment of the light emitting device of the present invention.
  • the light-emitting device of the present invention includes various doors such as a house entrance door, doors for shops and various facilities, residential building materials (partitions, etc.) other than doors, wall surfaces and floor surfaces of buildings, cupboards, It may be incorporated into furniture such as kitchen storage, windows (skylights), gateposts, nameplates, and public exteriors (fences, signs, bulletin boards, guide lights, handrails).
  • the structure in which the light-emitting device is incorporated may be a structure that is required to guide light from the outside to the inside of the structure or in the opposite direction. Further, the structure may be formed by combining a plurality of illumination modules 1.
  • the light emitting device may be realized as a window member that is fitted in a window frame having a rail and is movable along the rail.
  • FIG. 2A and 2B are diagrams showing the configuration of the illumination module 1, wherein FIG. 2A is a plan view of the illumination module 1, and FIG. 2B is a side sectional view.
  • the illumination module 1 includes a light guide plate (light guide unit, light guide) 2, a protective glass 3, an LED (light source, light emitting diode) 4, and a light guide plate holding unit 5. And a frame 6.
  • the light emitted from the LED 4 is guided by the light guide plate 2 and mainly emitted from the first surface 2 a of the light guide plate 2. This light can reduce the visibility when an object located on the second surface 2b side facing the first surface 2a is viewed from the first surface 2a side of the light guide plate 2.
  • FIG. 1A is a side sectional view of the light guide plate 2 in a state where the LED 4 is not lit
  • FIG. 1B is a side sectional view of the light guide plate 2 in a state where the LED 4 is lit.
  • the illumination module 1 is provided at the entrance door, the illumination module 1 is arranged on the door so that the first surface 2a of the light guide plate 2 is located outdoors and the second surface 2b is located indoors.
  • the light guide plate 2 is fixed to the frame 6 by being fitted into a groove formed by the light guide plate holding portion 5.
  • the shapes of the first surface 2a and the second surface 2b of the light guide plate 2 do not need to be quadrilaterals, but may be triangles, polygons having five or more sides, or other figures such as circles.
  • the light guide plate 2 does not have to be a flat plate and may be curved.
  • the illumination module 1 functions as a daylighting window when the LED 4 is not lit.
  • 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 can be used.
  • the light guide plate 2 may be transparent or translucent. As will be described later, the transparency of the light guide plate 2 can be changed according to the density of the prisms 21 and the size of the prisms 21. That is, if the density or size of the prism is large, the refractive reflection and scattering of light on the surface increases, and thus the vertical transmittance (visibility) of the first surface and the second surface of the light guide plate decreases. .
  • the light guide plate 2 has a prism (orientation control structure, reflection diffusion structure) 21 on the second surface 2b.
  • Light distribution control (orientation control) of the light emitted from D4 is performed.
  • the prism 21 is an optical member that changes the propagation direction of light propagating through the light guide plate 2, and a plurality of prisms 21 having substantially the same shape are formed on the second surface 2b.
  • the prism 21 is formed as a recess in the second surface 2b, for example. However, even if the prism is convex, the same effect can be obtained. Furthermore, the prism does not have to be formed only from a flat surface, and a part or all of it may be a curved surface.
  • FIG. 3 is a diagram illustrating a difference in light distribution characteristics between light emitted from the first surface 2a of the light guide plate 2 and light emitted from the second surface 2b.
  • the protective glass 3 is omitted.
  • the light distribution characteristic of the light emitted from the first surface 2a and the light distribution characteristic of the light emitted from the second surface 2b are different from each other.
  • the main emission direction (emission angle and orientation characteristic) of the light emitted from the first surface 2a is different from the main emission direction (emission angle and orientation characteristic) of the light emitted from the second surface 2b.
  • the main emission direction is a direction defined by a portion having the highest light intensity in the intensity distribution of light emitted from the first surface 2a or the second surface 2b.
  • the light emitted from the first surface 2a is in a direction perpendicular to the first surface 2a (horizontal direction). Mainly emitted.
  • the light emitted from the second surface 2b is mainly emitted in a direction inclined vertically downward from the direction perpendicular to the second surface 2b (vertically inclined downward direction).
  • the luminance of light emitted at a predetermined angle with respect to the first surface 2a is higher than the luminance of light emitted at the predetermined angle with respect to the second surface 2b.
  • the predetermined angle is 90 °
  • the front luminance of the first surface 2a is higher than the front luminance of the second surface 2b.
  • the predetermined angle is not limited to 90 °, and is appropriately determined according to the height at which the lighting module 1 is disposed and the height of the line of sight of an assumed visitor (a person assumed to look indoors from outside). It may be changed.
  • the shape of the prism 21 is defined so that light from the LED 4 is emitted mainly from the first surface 2a.
  • the shape of the prism 21 is defined so that the total luminous flux of the light emitted from the first surface 2a is larger than the total luminous flux of the light emitted from the second surface 2b.
  • the number of lighting modules 1 arranged in one door, the mounting position, and the size and shape of the lighting module 1 are not particularly limited.
  • the lighting module 1 is mounted at a position that is higher than the height of the expected visitor's line of sight.
  • FIG. 4A is a diagram showing the arrangement of the prisms 21 on the second surface 2b
  • FIG. 4B is a plan view showing the shape of the prisms 21.
  • the prisms 21 are formed in a matrix on the second surface 2b of the light guide plate 2 at intervals of about 250 ⁇ m.
  • one prism 21 is formed as a recess having 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 prism 21 with respect to the second surface 2b is, for example, 1.4%, but the occupation ratio may be set as appropriate.
  • the illumination module 1 functions well as a daylighting window when the LED 4 is not turned on.
  • FIG. 5A is a cross-sectional view when the prism 21 is cut along a plane parallel to the straight traveling direction (x-axis direction) of light from the LED 4 and perpendicular to the second surface 2b.
  • FIG. 5B is a cross-sectional view of the prism 21 cut along a plane perpendicular to the x-axis direction and perpendicular to the second surface 2b.
  • the prism 21 has, for example, trapezoidal inclined surfaces 21 a and 21 b that reflect light emitted from the LED 4.
  • the angle ⁇ is 45 °
  • the angle ⁇ is 60 °
  • the angles ⁇ and ⁇ are 60 °.
  • these numerical values are merely examples, and may be set as appropriate.
  • the light hitting the prism 21 changes its traveling direction and is emitted from the first surface 2a side.
  • the shape of the prism 21 (particularly, the angles ⁇ and ⁇ of the inclined surfaces 21a and 21b), the emission angle of the light emitted from the first surface 2a can be changed.
  • the size (width A and B) of the prism 21, the thickness of the light guide plate 2, and the formation density of the prisms 21 are the light extraction efficiency in the light guide plate 2, the light distribution characteristics due to the return light, and the transmittance in the vertical direction of the light guide plate 2. This is a parameter that affects (visibility).
  • the prism 21 may be a quadrangular pyramid or a quadrangular pyramid, and the shape of the prism 21 is not particularly limited. Further, the inclined surface 21a may be rectangular or square, but the trapezoidal shape is easier to manufacture. Further, the prism 21 may have a convex shape protruding from the second surface 2b, and in the case of the convex shape, the same effect as the concave shape can be obtained. By making the prism 21 convex, it becomes easy to form the prism 21 by molding.
  • the prism 21 is not necessarily formed with a flat surface, and a part or all of the prism 21 may be formed with a curved surface.
  • the prism 21 may be a line-shaped recess or protrusion, and the line-shaped recess or protrusion is perpendicular to the optical axis of the light emitted from the LED 4 (in FIG. 4A). It may be formed in parallel to the y-axis direction, and may be formed in a plurality of rows (for example, at equal intervals) in the extending direction of the optical axis (along the x-axis direction in FIG. 4A).
  • the protective glass 3 is a glass plate for protecting the light guide plate 2, and is disposed on the first surface 2a side and the second surface 2b side of the light guide plate 2, 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 is effective as a building material structure in view of non-flammability and flame retardancy, environmental resistance, crime prevention, etc., but depending on the application, it is not limited to glass, synthetic resin, 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 LED 4 is a light source for illumination, and is disposed in the vicinity of at least one side of the light guide plate 2.
  • the LED 4 is disposed in the vicinity of the vertical upper end of the light guide plate 2 in a state where the illumination module 1 is attached to the door 10.
  • substrate of LED4 is arrange
  • the position of the LED 4 is not particularly limited as long as the light emitted from the LED 4 enters the light guide plate 2.
  • the output of the LED 4 is not particularly limited, but the output is such that a privacy protection effect can be obtained by the light emitted from the first surface 2a. It is good also as a structure which a user can adjust the output of LED4.
  • the light emitted from the LED 4 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 LED 4 is performed by a power control device that controls supply of driving power supplied to the LED 4, and the power control device may be inside or outside the lighting module 1.
  • the power supply control device is, for example, a switch disposed on an indoor wall surface.
  • the power can be supplied via 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, etc. It is.
  • the LED 4 may be an LED bar 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 LED4 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 holds the light guide plate 2 to fix the relative position of the light guide plate 2 with respect to the frame 6.
  • 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, a metal, and is particularly preferably aluminum from the viewpoint of weight reduction, 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 2, but holds the vertical lower end by holding the vertical upper end of the light guide plate 2. It is possible to hold the light guide plate 2 more stably than to do.
  • the frame 6 is a member that forms the outer frame of the lighting module 1 and is made of, for example, metal (particularly aluminum), but the material of the frame 6 is not particularly limited.
  • FIG. 6A is a diagram showing the luminance distribution of illumination light outdoors when the LED 4 is turned on
  • FIG. 6B shows the luminance distribution of illumination light indoors when the LED 4 is turned on.
  • the illumination module 1 is disposed on the lower side of the images shown in FIGS. 6 (a) and 6 (b).
  • the light emitted from the light guide plate 2 of the illumination module 1 is emitted mainly outdoors (on the side of the first surface 2a), and all of the light emitted indoors.
  • the luminous flux is small.
  • emitted outdoors is higher than the brightness
  • the ratio of the luminous flux of light emitted outdoors to the luminous flux of light emitted indoors can be set to about 3: 1, for example. Further, the ratio of the front luminance of the light emitted outdoors to the front luminance of the light emitted indoors can be set to about 10: 1, for example.
  • FIG. 7 is a cross-sectional view showing the basic structure of the illumination module 1 of the present embodiment.
  • FIG. 8 is a diagram for explaining the interval between the prisms 21 formed on the light guide plate 2 included in the illumination module 1 of the present embodiment.
  • the cut surface of the prism 21 of the light guide plate 2 on the xz plane is a right triangle. That is, the angle ⁇ shown in FIG. 5A is 90 °. In this embodiment, the angles ⁇ and ⁇ shown in FIG. 5B are 90 °, and the widths A and B are 25 ⁇ m. Further, the pitches Px and Py between the prisms 21 shown in FIG. 8 are both 0.2 mm.
  • FIG. 9A shows the result of simulating the emission direction of light emitted from the light guide plate 2 when the angle ⁇ is changed to 30 °, 45 °, and 60 ° in the prism 21 that satisfies such conditions. Shown in (d). 9A shows the result when the angle ⁇ is 30 °, FIG. 9B shows the result when the angle ⁇ is 45 °, and FIG. 9C shows the result when the angle ⁇ is 60 °. FIG. 9D shows the results of FIGS. 9A to 9C at the same time.
  • the result indicated by reference numeral 300 indicates the direction of light emitted from the first surface 2a of the light guide plate 2 to the outdoor side
  • the result indicated by reference numeral 310 indicates from the second surface 2b of the light guide plate 2 to the indoor side. It shows the direction of the emitted light.
  • FIGS. 10A and 10B are diagrams for explaining the effect of the illumination module 1. As shown to Fig.10 (a), in the state which does not light LED4, the light from the outdoors permeate
  • the entrance can be illuminated by light emitted from the light guide plate 2 to the outdoors, and the illumination module 1 also functions as an entrance lamp.
  • the feet of the front door can be illuminated, and the lighting module 1 also functions as a room light.
  • the light emitted indoors from the light guide plate 2 is weaker than the light emitted outdoors and is emitted vertically downward, so that the indoor object is illuminated brightly by the light emitted indoors. It is possible to reduce the possibility that the effect of protection will be weakened.
  • the light emitted from the first surface 2a is emitted in the front direction
  • the light emitted from the second surface 2b is emitted in the vertically diagonally downward direction, but the first surface 2a and the second surface 2b.
  • the emission direction of light from is not limited to the above.
  • the direction of the light emitted from the first surface 2a may be lowered slightly vertically from the front direction.
  • ⁇ Orienting the light toward the outdoor side in an obliquely downward direction can also serve as a gate light (entrance light) toward the outdoors, or as a hand illumination that illuminates the keyhole.
  • Embodiment 2 The following will describe another embodiment of the present invention with reference to FIGS.
  • symbol is attached
  • FIG. 11 is a diagram showing a configuration of the light guide plate 2 and the light source provided in the illumination module (light emitting device, illumination device) 100 of the present embodiment.
  • the illumination module 100 differs from the illumination module 1 in that it includes two LED bars 4A and 4B as light sources with respect to the light guide plate (light guide unit, light guide) 20.
  • the LED bars 4A and 4B are arranged on different sides (end portions) of the light guide plate 2 or in the vicinity thereof.
  • the material of the light guide plate 20 may be the same as the material of the light guide plate 2.
  • the other members are the same as the members provided in the illumination module 1, and are omitted in FIG.
  • FIG. 12 (a) and 12 (b) are diagrams showing the shape of the prism 21 formed on the light guide plate 20 provided in the illumination module 100.
  • FIG. 12A is a side sectional view of the prism 21 when viewed along the negative x-axis direction in FIG. 11, and
  • FIG. 12B is the prism 21 along the y-axis direction in FIG. It is side surface sectional drawing at the time of seeing.
  • FIGS. 13 (a) and 13 (b) are diagrams showing the light emission direction when the LED bar 4A is turned on.
  • FIGS. 14A and 14B are diagrams showing the light emission direction when the LED bar 4B is turned on.
  • FIGS. 13A and 14A are side views when the illumination module 100 is viewed along the y-axis direction in FIG. 11, and
  • FIGS. 13B and 14B are FIGS. It is a top view at the time of seeing the illumination module 100 along the x-axis direction in FIG.
  • a prism 21 is formed on the second surface 20 b of the light guide plate 20.
  • Light emitted from the LED bar 4A (light incident from the first end of the light guide plate 20) mainly hits the inclined surface (reflecting surface) 21c of the prism 21 (see FIG. 12B), and mainly the second light.
  • the light is emitted vertically downward from one surface 20a.
  • the light emitted from the second surface 20b is also emitted obliquely downward in the vertical direction (see FIGS. 13A and 13B).
  • the emission angle at this time is defined by the angle ⁇ of the inclined surface 21c.
  • light emitted from the LED bar 4B (light incident from the second end portion of the light guide plate 20) mainly hits the inclined surface 21a of the prism 21 (see FIG. 12A) and mainly the first surface.
  • the light is emitted from 20a in the horizontal direction.
  • the light emitted from the second surface 20b is also emitted in the horizontal direction (see FIGS. 14A and 14B).
  • the emission angle at this time is defined by the angle ⁇ of the inclined surface 21a.
  • the illumination module 100 functions as an entrance light (porch light) that illuminates the feet of the entrance, and visibility when viewing indoors from the outside hardly deteriorates.
  • the illumination module 100 has a privacy protection function for reducing visibility when an indoor object is viewed from the outside because the front luminance of the light guide plate 20 is increased.
  • Both the LED bars 4A and 4B may be turned on. In this case, both functions as an entrance lamp and a privacy protection function are realized.
  • a third LED bar may be disposed on the side opposite to the side of the light guide plate 2 on which the LED bar 4B is disposed, and the orientation may be controlled using the inclined surface (reflective surface) 21d.
  • FIG. 15A is a front view showing the configuration of the illumination module (light emitting device) 110 of the present embodiment
  • FIG. 15B is a side view of the illumination module 110.
  • the illumination module 110 includes a light guide plate (light guide portion, light guide) 30.
  • the light guide plate 30 is made of the same material as that of the light guide plate 2, but is different from the light guide plate 2 in that it has a plurality of regions (first region 31 and second region 32).
  • first region 31 and the second region 32 are formed along the vertical direction.
  • the first region 31 is a region located at the height of the line of sight of a person (for example, a visitor), and is located vertically above the second region 32.
  • the above-described prism 21 (not shown in FIG. 15) is formed on the second surface 30 b of the light guide plate 30, but the angle ⁇ of the inclined surface 21 a of the prism 21 in the first region 31 and the second region 32. (See FIG. 5). Therefore, the prism 21 can also be expressed as being divided into a plurality of regions.
  • the light emitted from the LED 4 is reflected by the inclined surface 21a and emitted from the first surface 30a side. In the first region 31, the light is emitted in the front direction (horizontal direction), whereas the second region. In 32, it radiate
  • the light emitted from the first area 31 has a privacy protection function, and the light emitted from the second area 32 can be used as illumination light for illuminating the front door.
  • the light emitted from the first region 31 may be emitted in the front direction, and the light emitted from the second region 32 may be emitted vertically upward.
  • privacy protection can be realized even when a visitor drops his / her line of sight vertically downward.
  • FIG. 16A is a front view showing the arrangement of the lighting modules (light emitting devices) 121 to 123 in the door 10 according to the present embodiment
  • FIG. 16B shows the arrangement of the lighting modules 121 to 123 in the door 10. It is a side view.
  • a plurality of lighting modules 121 to 123 are arranged along the vertical direction on one door 10 in a state where the door 10 is installed in a house or the like.
  • the basic structure of the illumination modules 121 to 123 is the same as that of the illumination module 1, and includes light guide plates (light guides) 41 to 43 similar to the light guide plate 2, respectively.
  • the angle ⁇ (see FIG. 5) of the inclined surface 21a of the prism 21 is different for each of the light guide plates 41 to 43. For this reason, the light distribution characteristics of the light to the outside differ for each of the illumination modules 121 to 123 according to the arrangement position (height).
  • the illumination module 121 is disposed at the height of the line of sight of a person (for example, a visitor) and emits light in the front direction.
  • the illumination module 122 is disposed vertically below the illumination module 121, and emits light obliquely upward in the vertical direction.
  • the illumination module 123 is disposed vertically below the illumination module 122 and emits light obliquely upward in the vertical direction with a larger elevation angle than the illumination module 122.
  • a sensor 44 for detecting the presence of a person (object) may be provided on the door 10.
  • the sensor 44 is, for example, an infrared sensor, but the type thereof is not particularly limited as long as it can detect a person.
  • the sensor 44 may be arrange
  • the illumination modules 121 to 123 may be turned on when the sensor 44 detects a person.
  • the lighting modules 121 to 123 are turned on only when a person approaches the door 10 and are turned off in other cases, so that power consumption can be reduced.
  • the distance between the door 10 and the person may be calculated by the sensor 44, and the illumination modules 121 to 123 that are turned on may be switched according to the distance.
  • the illumination module 100 of the second embodiment and the sensor 44 may be combined to form an illumination system, and the orientation direction of light emitted outdoors may be varied according to the distance. For example, when a person is away from the door, the illumination light is realized by emitting light obliquely downward, and when the person approaches the door (when the distance is below a predetermined value). May realize the privacy protection function by emitting light in the front direction.
  • a brightness sensor as the sensor, it can be turned on automatically when it gets dark.
  • FIGS. 17A and 17B are diagrams showing the configuration of the illumination system (door illumination system) 50 of the present embodiment, in which FIG. 17A shows a state in which the door 10 is closed, and FIG. 10 shows an open state.
  • the LED 4 is embedded in the door frame 11 for arranging the door 10 on a wall surface or the like.
  • the light emitted from the LED 4 travels vertically downward, and enters the light guide plate 2 from the upper end portion close to the LED 4 in a state where the door 10 is closed.
  • the incident light is emitted to the outdoor (or outdoor) side by the prism 21 of the light guide plate 2, and a privacy protection function and an entrance lamp function are realized.
  • the light emitted from the LED 4 functions as illumination light that directly illuminates directly under the door frame 11.
  • FIG. 18A is a front view showing the configuration of the illumination module (light emitting device) 60 of the present embodiment
  • FIG. 18B is a side view showing the orientation direction of light emitted from the illumination module 60. .
  • the illumination module 60 of the present embodiment is disposed in a partition (building material structure) 61, and all or one of four sides (sides 62A to 62D) of the light guide plate 64.
  • LED4 is arrange
  • the light guide plate 64 includes a prism 21 (not shown in FIG. 18) for controlling the orientation of light incident from a plurality of ends on the second surface 62b.
  • the shape of the prism 21 is defined so that the front luminance on one side (the first surface 62a or the second surface 62b) can be increased regardless of which side of the sides 62A to 62D is incident.
  • the LED 4 may be arranged on at least two of the four sides of the light guide plate 64, and the light emission direction may be switched by switching the LED 4 to be lit.
  • the LED 4 arranged on the side 62A when the LED 4 arranged on the side 62A is lit, the light is emitted to the first surface 62a side, and when the LED 4 arranged on the side 62C is lit, the light is emitted to the second surface 62b.
  • the angles of the inclined surface 21a and the inclined surface 21d (see FIG. 5) of the prism 21 may be defined so as to be emitted to the side of the prism 21. By making the angle ⁇ of the inclined surface 21d greater than 90 °, the light from the LED 4 can be emitted to the second surface 62b side.
  • the LED for switching the emission to the first surface 62a and the second surface 62b is not limited to the two sides of the side 62A and the side 62C, and can be realized by, for example, a combination of the side 62A and the side 62B. .
  • the angle ⁇ of the inclined surface 21a is 90 ° or less. Controlling and emitting light from the side 62B to the second surface 62b can be realized by controlling the angle ⁇ of the inclined surface 21b at 90 ° or more.
  • the side that needs privacy protection function may change depending on the situation. According to the above configuration, by selecting the LED 4 to be lit, both sides of the partition 61 (the first surface 62a side and the second surface 62b side of the light guide plate 64) or one side selected by the user A privacy protection function can be realized.
  • the illumination module 60 can be used as illumination of the room where the partition 61 is installed.
  • FIGS. 19A and 19B are diagrams showing the configuration of the illumination module 70 of the present embodiment, where FIG. 19A shows a state in which the illumination module 70 is turned off, and FIG. Indicates the lighting state.
  • the illumination module 60 of the present embodiment is disposed on the ceiling 71, the first surface 2a of the light guide plate 2 is located on the indoor side, and the second surface. 2b is located on the outdoor side.
  • the lighting module 60 functions as a skylight when turned off, and functions as room lighting when turned on. Since the light emitted from the LED 4 hardly radiates to the outdoor side, there is little loss even when the illumination module 60 is used as room lighting.
  • the lighting module 60 can perform daylighting when turned off, but the amount of light reaching the indoor space can be controlled by the prism 21 depending on the direction of sunlight.
  • winter sunlight light incident on the light guide plate 2 at a small angle
  • summer sunlight light incident on the light guide plate 2 at a large angle
  • the shape of the prism 21 may be defined so that the transmittance of the light guide plate 2 is low.
  • the shape of the prism 21 may be defined so that the transmitted light always has the same angle component even if the direction of sunlight changes. Thereby, it is possible to irradiate a certain place with the 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 emitted.
  • the prism surface has a curved surface structure in order to cope with various angle components of sunlight, and a surface positioned perpendicular to the inclined surface 21a (21b) for controlling the angle of the LED light is By using the control surface, it is possible to perform the external light angle control without affecting the illumination function by the LED light.
  • the protective glass 3 (omitted in FIG. 19) may have an infrared cut function and / or an ultraviolet cut function.
  • the function as a normal mirror is not hindered because it is transparent when turned off.
  • the pasting portion functions as surface illumination, so that it is possible to provide a function as illumination capable of irradiating light from the closest position to a portion that is desired to be viewed with a mirror.
  • the present invention can be optimally used as a translucent member used in a structure that is required to reduce the visibility of an object inside the structure from the outside, and particularly as a window for a front door or the like. It can be suitably used.
  • the orientation characteristics can be used as illumination with the optimal orientation characteristics when the LED is turned off and transparent when the LED is turned off, and can be used as a skylight, transparent illumination (ceiling illumination, wall illumination, It can be used as gate lamps, street lamps, outdoor bulletin boards / signs, mirrors such as washstands).

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Planar Illumination Modules (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
PCT/JP2013/051966 2012-04-09 2013-01-30 Guide de lumière, dispositif émetteur de lumière, corps structurel pour matériau de construction, système d'éclairage de porte et porte Ceased WO2013153837A1 (fr)

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JP2019096597A (ja) * 2017-11-21 2019-06-20 パナソニックＩｐマネジメント株式会社 表示装置
JP2021508166A (ja) * 2018-02-20 2021-02-25 シグニファイ ホールディング ビー ヴィＳｉｇｎｉｆｙ Ｈｏｌｄｉｎｇ Ｂ．Ｖ． 照明ユニットを有する窓
EP3867566A1 (fr) * 2018-10-17 2021-08-25 Glass Technology GmbH Ensemble vitré à éclairage
WO2022090619A1 (fr) * 2020-10-26 2022-05-05 Teknologian Tutkimuskeskus Vtt Oy Dispositif de commande de visibilité
CN119879241A (zh) * 2024-12-20 2025-04-25 广东奥特龙电器制造有限公司 带光纤照明的油烟机
RU2847544C1 (ru) * 2024-12-26 2025-10-08 Александр Дмитриевич Дубинин Настенное устройство автоматического контроля уровня освещенности

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CN106164586A (zh) * 2014-02-17 2016-11-23 飞利浦灯具控股公司 使用集成照明在窗口中产生不透明度和隐私的光防护物
JP2017509115A (ja) * 2014-02-17 2017-03-30 フィリップス ライティング ホールディング ビー ヴィ 一体型照明を用いて窓の不透明性及びプライバシーを設ける光シールド
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CN106164586B (zh) * 2014-02-17 2019-10-25 飞利浦灯具控股公司 使用集成照明在窗口中产生不透明度和隐私的光防护物
WO2015121352A1 (fr) * 2014-02-17 2015-08-20 Koninklijke Philips N.V. Écran lumineux mettant en œuvre un éclairage intégré pour assurer l'opacité des fenêtres et la protection de l'intimité
JP7054882B2 (ja) 2017-11-21 2022-04-15 パナソニックＩｐマネジメント株式会社 表示装置
JP2019096597A (ja) * 2017-11-21 2019-06-20 パナソニックＩｐマネジメント株式会社 表示装置
JP2021508166A (ja) * 2018-02-20 2021-02-25 シグニファイ ホールディング ビー ヴィＳｉｇｎｉｆｙ Ｈｏｌｄｉｎｇ Ｂ．Ｖ． 照明ユニットを有する窓
EP3867566A1 (fr) * 2018-10-17 2021-08-25 Glass Technology GmbH Ensemble vitré à éclairage
WO2022090619A1 (fr) * 2020-10-26 2022-05-05 Teknologian Tutkimuskeskus Vtt Oy Dispositif de commande de visibilité
US11993981B2 (en) 2020-10-26 2024-05-28 Teknologian Tutkimuskeskus Vtt Oy Device for controlling visibility
CN119879241A (zh) * 2024-12-20 2025-04-25 广东奥特龙电器制造有限公司 带光纤照明的油烟机
RU2847544C1 (ru) * 2024-12-26 2025-10-08 Александр Дмитриевич Дубинин Настенное устройство автоматического контроля уровня освещенности

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