WO2021200071A1 - Illumination device - Google Patents

Illumination device Download PDF

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Publication number
WO2021200071A1
WO2021200071A1 PCT/JP2021/010378 JP2021010378W WO2021200071A1 WO 2021200071 A1 WO2021200071 A1 WO 2021200071A1 JP 2021010378 W JP2021010378 W JP 2021010378W WO 2021200071 A1 WO2021200071 A1 WO 2021200071A1
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WO
WIPO (PCT)
Prior art keywords
light
light guide
guide plate
lighting device
light source
Prior art date
Application number
PCT/JP2021/010378
Other languages
French (fr)
Japanese (ja)
Inventor
田中　健一郎
聡 兵頭
Original Assignee
パナソニックＩｐマネジメント株式会社
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 パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to JP2022511793A priority Critical patent/JP7304533B2/en
Publication of WO2021200071A1 publication Critical patent/WO2021200071A1/en

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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
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/34—Supporting elements displaceable along a guiding element
    • 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]
    • 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]
    • F21Y2115/15—Organic light-emitting diodes [OLED]
    • 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
    • F21Y2115/20—Electroluminescent [EL] light sources

Definitions

  • the present invention relates to a lighting device including a light guide plate.
  • Patent Document 1 discloses a planar light emitting device having high brightness and uniform brightness.
  • the wiring duct is a long structure used for attaching a lighting device, and is also called a duct rail or a slide outlet.
  • the present invention provides a lighting device capable of setting a wide range between a plurality of wiring ducts as a light emitting region.
  • the lighting device uses the electric power supplied from the first wiring duct connected to the first wiring duct among the first wiring duct and the second wiring duct running in parallel at intervals. It is provided with a first light source that emits light, and a light guide plate that is bridged to the first wiring duct and the second wiring duct and emits surface light when the light emitted by the first light source is incident.
  • the lighting device of the present invention can make a wide range between a plurality of wiring ducts a light emitting region.
  • FIG. 1 is an external perspective view of the lighting system according to the first embodiment.
  • FIG. 2 is a view (top view) showing a configuration example 1 of the lighting device according to the first embodiment.
  • FIG. 3 is a diagram (cross-sectional view) showing a configuration example 1 of the lighting device according to the first embodiment.
  • FIG. 4 is a diagram (cross-sectional view) showing a configuration example 2 of the lighting device according to the first embodiment.
  • FIG. 5 is a diagram (cross-sectional view) showing a configuration example 3 of the lighting device according to the first embodiment.
  • FIG. 6 is a diagram (cross-sectional view) showing a configuration example 4 of the lighting device according to the first embodiment.
  • FIG. 7 is an external perspective view of the lighting system according to the second embodiment.
  • FIG. 1 is an external perspective view of the lighting system according to the first embodiment.
  • FIG. 2 is a view (top view) showing a configuration example 1 of the lighting device according to the first embodiment.
  • FIG. 3 is a diagram (
  • FIG. 8 is a view (top view) showing a configuration example 1 of the lighting device according to the second embodiment.
  • FIG. 9 is a diagram (cross-sectional view) showing a configuration example 1 of the lighting device according to the second embodiment.
  • FIG. 10 is a diagram (cross-sectional view) showing a configuration example 2 of the lighting device according to the second embodiment.
  • FIG. 11 is a diagram (cross-sectional view) showing a configuration example 3 of the lighting device according to the second embodiment.
  • FIG. 12 is a diagram (cross-sectional view) showing a configuration example 4 of the lighting device according to the second embodiment.
  • FIG. 13 is a diagram (cross-sectional view) showing a configuration example 5 of the lighting device according to the second embodiment.
  • FIG. 14 is a cross-sectional view of the lighting device according to the third embodiment.
  • each figure is a schematic diagram and is not necessarily exactly illustrated. Further, in each figure, substantially the same configuration may be designated by the same reference numerals, and duplicate description may be omitted or simplified. Further, in the following embodiments, the expression “almost” or “abbreviation” also means that a manufacturing error, a dimensional tolerance, or the like is included.
  • the Z-axis direction is described as the height direction of the illuminator.
  • the Z-axis + side may be expressed as an upper side (upper side), and the Z-axis-side may be expressed as a lower side (lower side).
  • the X-axis direction and the Y-axis direction are directions orthogonal to each other on a plane perpendicular to the Z-axis direction.
  • plan view means viewing from the Z-axis direction.
  • FIG. 1 is an external perspective view of the lighting system according to the first embodiment.
  • the lighting system 100 includes a plurality of lighting devices 10 (only one is shown in FIG. 1) and a plurality of wiring ducts 50.
  • the plurality of wiring ducts 50 are suspended from the ceiling of the indoor space 60 such as an office, or are attached to the ceiling, and are arranged so as to run in parallel at intervals.
  • Each of the plurality of lighting devices 10 includes a light guide plate 40 that emits light from the surface, and the plurality of lighting devices 10 are laid out so as to bridge the plurality of wiring ducts 50.
  • the lighting system 100 can realize an indoor space 60 in which a wide area on the ceiling side can be seen shining.
  • the plurality of lighting devices 10 are located above the plurality of wiring ducts 50.
  • the device can be attached to the groove formed on the lower side (Z-axis-side) of each of the plurality of wiring ducts 50. That is, the lighting system 100 can realize an indoor space 60 in which a wide area on the ceiling side can be seen shining while maintaining the main function of the wiring duct 50.
  • the wiring duct 50 is a long member having a groove formed on the lower side, and is provided with a power supply terminal inside.
  • the wiring duct 50 may be called a duct rail or the like.
  • Equipment such as an outlet or a lighting device having a mounting structure suitable for the groove is attached to the wiring duct 50, and the wiring duct 50 can supply electric power to these devices via the power supply terminal.
  • the wiring duct 50 may be provided with a terminal for transmitting information in addition to the power feeding terminal.
  • Each of the plurality of wiring ducts 50 is arranged so that the longitudinal direction is along the Y-axis direction. Further, the plurality of wiring ducts 50 are arranged at intervals in the X-axis direction. That is, the plurality of wiring ducts 50 run in parallel at intervals.
  • FIG. 2 is a top view of the lighting device 10
  • FIG. 3 is a cross-sectional view of the lighting device 10 (cross-sectional view taken along the line III-III of FIG. 2).
  • the first wiring duct 51 and the second wiring duct 52 shown in FIGS. 2 and 3 are two adjacent wiring ducts 50 among the plurality of wiring ducts 50 shown in FIG.
  • the lighting device 10 includes a first light source 21, a second light source 22, a first light guide path 31, a second light guide path 32, and a light guide plate 40.
  • the lighting device 10 may include at least the first light source 21, and it is not essential that the lighting device 10 includes the second light source 22.
  • the first light source 21 is a light emitting module that is connected (mounted) on the upper surface of the first wiring duct 51 and emits light upward by using the electric power supplied from the first wiring duct 51.
  • the first light source 21 has a substrate 21a and a light emitting element 21b.
  • the substrate 21a is a long rectangular substrate long in the Y-axis direction in the drawing.
  • the longitudinal direction of the substrate 21a is the Y-axis direction
  • the lateral direction of the substrate 21a is the X-axis direction.
  • the shape of the substrate 21a is not particularly limited.
  • the substrate 21a is a rigid substrate such as a resin substrate, a ceramic substrate, or a metal base substrate.
  • the mounting surface of the substrate 21a which is the main surface on which the plurality of light emitting elements 21b are mounted, faces the first main surface 41 of the light guide plate 40.
  • the plurality of light emitting elements 21b are arranged side by side in a row along the longitudinal direction of the substrate 21a, for example.
  • the light emitting element 21b is a surface mount type (Surface Mount Device: SMD type) LED element that emits white light.
  • the surface mount type LED element is a package type LED element in which an LED chip is mounted in a resin-molded cavity and a phosphor-containing resin is sealed in the cavity.
  • the light emitting element 21b emits white light of, for example, daylight color to light bulb color (color temperature of 2600 K or more and 7100 K or less) toward the other end of the first light guide path 31.
  • the first light source 21 is electrically connected to the power supply terminal 51a in the first wiring duct 51 by a connecting member 21c such as a cable or an FPC. Further, in more detail, the first light source 21 is electrically connected to the power supply terminal in the first wiring duct 51 via a power conversion circuit (not shown).
  • the power conversion circuit is configured by a DC-DC converter or the like, and when AC power is supplied from the first wiring duct 51, the power conversion circuit is , AC-DC converter, DC-DC converter and the like.
  • the first light guide path 31 is an optical member for guiding the light emitted by the first light source 21 inside the light guide plate 40.
  • the first light guide path 31 is an optical member whose one end is connected to the X-axis + side end of the first main surface 41 and the light emitted by the first light source 21 is incident on the other end.
  • the cross-sectional shape of the first light guide path 31 is, for example, an arch shape.
  • the first light guide path 31 is formed of, for example, acrylic, but may be formed of polycarbonate, glass, or the like.
  • the first light guide path 31 may be formed integrally with the light guide plate 40, or may be a separate body from the light guide plate 40.
  • the second light source 22 is a light emitting module that is connected (mounted) on the upper surface of the second wiring duct 52 and emits light using the electric power supplied from the second wiring duct 52. Since the specific configuration of the second light source 22 is substantially the same as that of the first light source 21, the description thereof will be omitted.
  • the second light guide path 32 is an optical member for guiding the light emitted by the second light source 22 inside the light guide plate 40. Since the specific configuration of the second light guide path 32 is substantially the same as that of the first light guide path 31, the description thereof will be omitted.
  • the light guide plate 40 emits surface light when the light emitted by the first light source 21 and the light emitted by the second light source 22 are incident.
  • the light guide plate 40 is a flat plate-shaped optical member having a rectangular shape when viewed from the Z-axis direction.
  • the light guide plate 40 is a transparent member, but may be a member having translucency.
  • the light guide plate 40 is made of, for example, acrylic, but may be made of polycarbonate, glass, or the like.
  • the light guide plate 40 has a first main surface 41 and a second main surface 42.
  • the first main surface 41 is a main surface facing the first light source 21 (first light guide path 31) and the second light source 22 (second light guide path 32).
  • the first main surface 41 is a flat surface.
  • the first main surface 41 is not provided with a reflective structure, a large number of fine recesses may be provided as the reflective structure as in the case of the second main surface 42.
  • the second main surface 42 is a main surface facing back to the first main surface 41, and has a reflective structure that reflects light incident on the light guide plate 40 via the first light guide path 31 and the second light guide path 32. It is the main surface provided.
  • the second main surface 42 is provided with a large number of fine recesses (prisms) as a reflective structure.
  • the cross-sectional shape of the recess is, for example, V-shaped, but is not particularly limited.
  • the light guide plate 40 is bridged to the first wiring duct 51 and the second wiring duct 52 above the first wiring duct 51 and the second wiring duct 52. In other words, the light guide plate 40 is arranged so as to straddle the first wiring duct 51 and the second wiring duct 52. As a result, when the lighting device 10 is looked up from the indoor space 60, the entire region between the first wiring duct 51 and the second wiring duct 52 emits light. As described above, according to the lighting device 10, it is possible to realize an indoor space 60 in which a wide area on the ceiling side can be seen shining.
  • FIG. 4 is a diagram showing a configuration example 2 of the lighting device, and specifically, is a cross-sectional view of the lighting device 10a. The top view of the lighting device 10a is not shown. In the following description of the configuration example 2, the description will be focused on the differences from the configuration example 1.
  • the lighting device 10a includes a first light source 21, a second light source 22, and a light guide plate 40a.
  • the lighting device 10a does not include the first light guide path 31 and the second light guide path 32, and by using the end surface (inclined surface) of the light guide plate 40a as a reflection surface, the light emitted by the first light source 21 and the light emitted by the first light source 21 are used.
  • the light emitted by the second light source 22 is guided to the inside of the light guide plate 40a.
  • the first end surface 43 included in the light guide plate 40a is an inclined surface in which the first main surface 41 side is inclined so as to protrude outward (X-axis + side) from the second main surface 42 side. That is, the first end surface 43 is a plane having an angle (for example, 45 °) different from 90 ° with respect to the first main surface 41 (or the second main surface 42). According to such a first end surface 43, the light emitted by the first light source 21 is reflected by the first end surface 43 and guided to the inside of the light guide plate 40a.
  • the second end surface 44 included in the light guide plate 40a is an inclined surface in which the first main surface 41 side is inclined so as to protrude outward (X-axis-side) from the second main surface 42 side. That is, the second end surface 44 is a plane having an angle (for example, 45 °) different from 90 ° with respect to the first main surface 41 (or the second main surface 42). According to such a second end surface 44, the light emitted by the second light source 22 is reflected by the second end surface 44 and guided to the inside of the light guide plate 40a.
  • the lighting system 100 may include such a lighting device 10a instead of the lighting device 10.
  • FIG. 5 is a diagram showing a configuration example 3 of the lighting device, specifically, is a cross-sectional view of the lighting device 10b. The top view of the lighting device 10b is not shown. In the following description of the configuration example 3, the description will be focused on the differences from the configuration example 2.
  • the lighting device 10b includes a first light source 21, a second light source 22, and a light guide plate 40b.
  • a collimating lens structure 45 is provided in a region of the first main surface 41 of the light guide plate 40b facing the first light source 21.
  • the collimating lens structure 45 is an optical structure for collimating (parallelizing) the light emitted by the first light source 21.
  • the collimating lens structure 45 may be formed integrally with the light guide plate 40b, or may be formed separately from the light guide plate 40b and attached to the light guide plate 40b.
  • a collimating lens structure 46 is provided in a region of the first main surface 41 of the light guide plate 40b facing the second light source 22.
  • the collimated lens structure 46 is an optical structure for collimating (parallelizing) the light emitted by the second light source 22.
  • the collimating lens structure 46 may be formed integrally with the light guide plate 40b, or may be formed separately from the light guide plate 40b and attached to the light guide plate 40b.
  • the light emitted by the first light source 21 is collimated by the collimating lens structure 45, then reflected by the first end surface 43 and guided to the inside of the light guide plate 40b.
  • the light emitted by the second light source 22 is collimated by the collimating lens structure 46, then reflected by the second end surface 44 and guided to the inside of the light guide plate 40b.
  • the lighting system 100 may include such a lighting device 10b instead of the lighting device 10.
  • FIG. 6 is a diagram showing a configuration example 4 of the lighting device, specifically, is a cross-sectional view of the lighting device 10c. The top view of the lighting device 10c is not shown. In the following description of the configuration example 4, the description will be focused on the differences from the configuration example 2.
  • the lighting device 10c includes a first light source 21 and a light guide plate 40c.
  • the lighting device 10c does not include the second light source 22, and by using the first end surface 43 (inclined surface) of the light guide plate 40c as a reflection surface, the light emitted by the first light source 21 is inside the light guide plate 40a. Guide.
  • the second end surface 44c included in the light guide plate 40c is an inclined surface in which the second main surface 42 side is inclined so as to protrude outward (X-axis-side) from the first main surface 41 side.
  • the second end surface 44c is a plane having an angle (for example, 45 °) different from 90 ° with respect to the first main surface 41 (or the second main surface 42).
  • adjacent light guide plates 40c can be brought close to each other in the X-axis direction. If the adjacent light guide plates 40c are brought close to each other, it is possible to prevent the vicinity of the second wiring duct 52 from becoming dark when looking up at the plurality of lighting devices 10c from the indoor space 60.
  • the lighting system 100 may include such a lighting device 10c instead of the lighting device 10.
  • the collimating lens structure 45 may be provided in the region of the first main surface 41 of the light guide plate 40c facing the first light source 21.
  • FIG. 7 is an external perspective view of the lighting system according to the second embodiment.
  • the lighting system 100a includes a plurality of lighting devices 10d (only one is shown in FIG. 7) and a plurality of wiring ducts 50.
  • the plurality of wiring ducts 50 are installed on the ceiling of an indoor space 60 such as an office so as to run in parallel at intervals.
  • the plurality of lighting devices 10d are located below the plurality of wiring ducts 50.
  • the wiring duct 50 does not block the light emitted by the plurality of lighting devices 10d, the lighting system 100a can easily realize the indoor space 60 in which a wide area on the ceiling side can be seen shining.
  • FIG. 8 is a top view of the lighting device 10d
  • FIG. 9 is a cross-sectional view of the lighting device 10d (cross-sectional view taken along the line IX-IX of FIG. 8).
  • FIGS. 8 and 9 two lighting devices 10d are shown.
  • the first wiring duct 51 and the second wiring duct 52 shown in FIGS. 8 and 9 are two adjacent two of the plurality of wiring ducts 50 shown in FIG. 7.
  • the lighting device 10d includes a first light source 21, a second light source 22, a first light guide path 31, a second light guide path 32, and a light guide plate 40d.
  • the lighting device 10d may include at least the first light source 21, and it is not essential that the lighting device 10d includes the second light source 22.
  • the differences between the lighting device 10d and the lighting device 10 will be described. In the lighting device 10d, the description of substantially the same matters as the lighting device 10 is omitted as appropriate.
  • the first light source 21 and the second light source 22 are connected to the lower surface (lower side) of the first wiring duct 51 and emit light downward.
  • the first light source 21 is electrically and structurally connected to the power supply terminal 51a in the first wiring duct 51 by, for example, a connecting member 21c such as a mounting structure that fits in the groove of the first wiring duct 51.
  • a connecting member 21c such as a mounting structure that fits in the groove of the first wiring duct 51.
  • the light guide plate 40d has a first main surface 41 and a second main surface 42.
  • the first main surface 41 is a main surface facing the first light source 21 (first light guide path 31) and the second light source 22 (second light guide path 32).
  • the first main surface 41 has a reflection structure in which the first light guide path 31 and the second light guide path 32 are connected and the light incident on the inside of the light guide plate 40d is reflected through the first light guide path 31 and the second light guide path 32. Is the main surface provided with.
  • the first main surface 41 is provided with a large number of fine recesses (prisms) as a reflective structure.
  • the cross-sectional shape of the recess is, for example, V-shaped, but is not particularly limited.
  • the second main surface 42 is a main surface facing the first main surface 41 and is a flat surface. Although the second main surface 42 is not provided with a reflective structure, a large number of fine recesses may be provided as the reflective structure as in the case of the first main surface 41.
  • the light guide plate 40d is bridged to the first wiring duct 51 and the second wiring duct 52 below the first wiring duct 51 and the second wiring duct 52.
  • the light guide plate 40d is arranged so as to straddle the first wiring duct 51 and the second wiring duct 52.
  • the end of the light guide plate 40d reaches below the first light source 21 and below the second light source 22.
  • FIG. 10 is a diagram showing a configuration example 2 of the lighting device, specifically, is a cross-sectional view of the lighting device 10e. The top view of the lighting device 10e is not shown. In the following description of the configuration example 2, the description will be focused on the differences from the configuration example 1.
  • the lighting device 10e includes a first light source 21, a second light source 22, and a light guide plate 40e.
  • the lighting device 10e does not include the first light guide path 31 and the second light guide path 32, and by using the end surface (inclined surface) of the light guide plate 40e as a reflection surface, the light emitted by the first light source 21 and the light emitted by the first light source 21 are used.
  • the light emitted by the second light source 22 is guided to the inside of the light guide plate 40e.
  • the first end surface 43 included in the light guide plate 40e is an inclined surface in which the first main surface 41 side is inclined so as to protrude outward (X-axis + side) from the second main surface 42 side. That is, the first end surface 43 is a plane having an angle (for example, 45 °) different from 90 ° with respect to the first main surface 41 (or the second main surface 42). According to such a first end surface 43, the light emitted by the first light source 21 is reflected by the first end surface 43 and guided to the inside of the light guide plate 40e.
  • the second end surface 44 included in the light guide plate 40e is an inclined surface in which the first main surface 41 side is inclined so as to protrude outward (X-axis-side) from the second main surface 42 side. That is, the second end surface 44 is a plane having an angle (for example, 45 °) different from 90 ° with respect to the first main surface 41 (or the second main surface 42). According to such a second end surface 44, the light emitted by the second light source 22 is reflected by the second end surface 44 and guided to the inside of the light guide plate 40a.
  • the lighting system 100a may include such a lighting device 10e instead of the lighting device 10d.
  • FIG. 11 is a diagram showing a configuration example 3 of the lighting device, specifically, is a cross-sectional view of the lighting device 10f. The top view of the lighting device 10f is not shown. In the following description of the configuration example 3, the description will be focused on the differences from the configuration example 2.
  • the lighting device 10f includes a first light source 21, a second light source 22, and a light guide plate 40f.
  • a collimating lens structure 45 is provided in a region of the first main surface 41 of the light guide plate 40f facing the first light source 21.
  • the collimating lens structure 45 is an optical structure for collimating (parallelizing) the light emitted by the first light source 21.
  • the collimating lens structure 45 may be formed integrally with the light guide plate 40f, or may be formed separately from the light guide plate 40f and attached to the light guide plate 40f.
  • a collimating lens structure 46 is provided in a region of the first main surface 41 of the light guide plate 40f facing the second light source 22.
  • the collimated lens structure 46 is an optical structure for collimating (parallelizing) the light emitted by the second light source 22.
  • the collimating lens structure 46 may be formed integrally with the light guide plate 40f, or may be formed separately from the light guide plate 40f and attached to the light guide plate 40f.
  • the light emitted by the first light source 21 is collimated by the collimating lens structure 45, then reflected by the first end surface 43 and guided to the inside of the light guide plate 40f.
  • the light emitted by the second light source 22 is collimated by the collimating lens structure 46, then reflected by the second end surface 44 and guided to the inside of the light guide plate 40f.
  • the lighting system 100a may include such a lighting device 10f instead of the lighting device 10d.
  • FIG. 12 is a diagram showing a configuration example 4 of the lighting device, specifically, is a cross-sectional view of the lighting device 10g. The top view of the lighting device 10g is not shown. In the following description of the configuration example 4, the description will be focused on the differences from the configuration example 2.
  • the lighting device 10 g includes a first light source 21 and a light guide plate 40 g.
  • the lighting device 10g does not include the second light source 22, and by using the first end surface 43 (inclined surface) of the light guide plate 40g as a reflection surface, the light emitted by the first light source 21 is inside the light guide plate 40a. Guide.
  • the second end surface 44g included in the light guide plate 40g is an inclined surface in which the second main surface 42 side is inclined so as to protrude outward (X-axis-side) from the first main surface 41 side.
  • the second end surface 44g is a plane forming an angle (for example, 45 °) different from 90 ° with respect to the first main surface 41 (or the second main surface 42). According to such a second end surface 44g, the light guide plates 40g adjacent to each other in the X-axis direction can be brought close to each other while suppressing the generation of a gap.
  • the lighting system 100a may include such a lighting device 10g instead of the lighting device 10d.
  • the collimating lens structure 45 may be provided in the region of the first main surface 41 of the light guide plate 40g facing the first light source 21.
  • FIG. 13 is a diagram showing a configuration example 5 of the lighting device, specifically, is a cross-sectional view of the lighting device 10h. The top view of the lighting device 10h is not shown. In the following description of the configuration example 5, the description will be focused on the differences from the configuration example 1.
  • the lighting device 10h includes a first light source 21, a second light source 22, a first light guide path 31, a second light guide path 32, and a light guide plate 40h.
  • the lighting device 10h need only include at least the first light source 21, and it is not essential that the lighting device 10h includes the second light source 22.
  • the first light source 21 and the second light source 22 are connected to the lower surface (lower side) of the first wiring duct 51 and emit light toward the side. Specifically, the first light source 21 emits light in the X-axis-direction, and the second light source 22 emits light in the X-axis + direction.
  • the first light source 21 is electrically and structurally connected to the power supply terminal 51a in the first wiring duct 51 by, for example, a connecting member such as a mounting structure that fits in the groove of the first wiring duct 51. The same applies to the second light source 22.
  • the end of the light guide plate 40h reaches below the first light source 21 and below the second light source 22, respectively.
  • the lighting system 100a may include such a lighting device 10h instead of the lighting device 10d.
  • a configuration such as the lighting device 10h may be adopted.
  • FIG. 14 is a cross-sectional view of the lighting device according to the third embodiment.
  • FIG. 14 shows two lighting devices 10i.
  • the first wiring duct 51 and the second wiring duct 52 shown in FIG. 14 are two adjacent wiring ducts 50 among the plurality of wiring ducts 50.
  • the lighting device 10i includes a first light source 21, a second light source 22, a first light guide path 31, a second light guide path 32, and a light guide plate 40i.
  • the lighting device 10i need only include at least the first light source 21, and it is not essential that the lighting device 10i includes the second light source 22.
  • the differences between the lighting device 10i and the lighting device 10 will be described. In the lighting device 10i, the description of substantially the same matters as the lighting device 10 will be omitted as appropriate.
  • the first light source 21 and the second light source 22 are connected to the outer surface (outer portion) of the first wiring duct 51 and emit light toward the side.
  • the first light source 21 emits light toward the first end surface 43 of the light guide plate 40i
  • the second light source 22 emits light toward the second end surface 44 of the light guide plate 40i.
  • the first light source 21 is electrically and structurally connected to the power supply terminal 51a in the first wiring duct 51 by, for example, a connecting member 21c such as a mounting structure that fits in the groove of the first wiring duct 51.
  • the substrate 21a included in the first light source 21 has an elongated shape with an L-shaped cross section, and also functions as a locking structure for the light guide plate 40i. The same applies to the second light source 22.
  • the light guide plate 40i is bridged between the first wiring duct 51 and the second wiring duct 52 to the first wiring duct 51 and the second wiring duct 52.
  • the lighting device 10 is connected to the first wiring duct 51 of the first wiring duct 51 and the second wiring duct 52 running in parallel at intervals, and the electric power supplied from the first wiring duct 51.
  • a first light source 21 that emits light using the above, and a light guide plate 40 that is bridged to the first wiring duct 51 and the second wiring duct 52 and emits surface light when the light emitted by the first light source 21 is incident.
  • the lighting devices 10a to 10h also have a similar configuration.
  • Such a lighting device 10 can realize an indoor space 60 in which a wide area on the ceiling side can be seen shining by using the wiring duct 50.
  • the lighting device 10 can have a wide range between the plurality of wiring ducts 50 as a light emitting region.
  • the light guide plate 40 has a first main surface 41 facing the first light source 21 and a second main surface 42 facing the first main surface 41.
  • the illuminating device 10 further includes a first light guide path 31 in which one end is connected to the first main surface 41 and the light emitted by the first light source 21 is incident on the other end.
  • the light guide plate 40d also has a similar configuration.
  • Such a light guide plate 40 can guide light to the inside of the light guide plate 40 by using the first light guide path 31.
  • the light guide plate 40a has a first main surface 41 facing the first light source 21 and a second main surface 42 facing the first main surface 41.
  • the first end surface 43 of the light guide plate 40a is inclined so that the first main surface 41 side protrudes outward from the second main surface 42 side, and the light emitted by the first light source 21 is reflected by the first end surface 43. It is guided to the inside of the light guide plate 40a.
  • the light guide plate 40b, the light guide plate 40c, the light guide plate 40e, the light guide plate 40f, and the light guide plate 40g also have the same configuration.
  • Such a light guide plate 40a can guide light inside the light guide plate 40a without using a light guide path.
  • a collimating lens structure 45 is provided in a region of the first main surface 41 of the light guide plate 40b facing the first light source 21.
  • the light emitted by the first light source 21 is collimated by the collimating lens structure 45, then reflected by the first end surface 43 and guided to the inside of the light guide plate 40b.
  • the light guide plate 40f also has a similar configuration.
  • the lighting device 10b provided with such a light guide plate 40b can make the light emitting surface brightness of the light guide plate 40b uniform.
  • the lighting device 10a further includes a second light source 22 that is connected to the second wiring duct 52 and emits light using the electric power supplied from the second wiring duct 52.
  • the second end surface 44 of the light guide plate 40a which is opposite to the first end surface 43, is inclined so that the first main surface 41 side protrudes outward from the second main surface 42 side.
  • the light emitted by the second light source 22 is reflected by the second end surface 44 and guided to the inside of the light guide plate 40.
  • the lighting device 10b, the lighting device 10e, and the lighting device 10f also have the same configuration.
  • the second end surface 44 of the light guide plate 40c opposite to the first end surface 43 is inclined so that the second main surface 42 side protrudes outward from the first main surface 41 side.
  • the light guide plate 40 g has a similar structure.
  • Such a light guide plate 40c can be arranged close to the adjacent light guide plates 40c while suppressing the occurrence of a gap. If the adjacent light guide plates 40c are brought close to each other, it is possible to prevent the boundary portion of the adjacent light guide plates 40c from becoming dark when looking up at the plurality of lighting devices 10c from the indoor space 60.
  • the first light source 21 is connected to the upper surface of the first wiring duct 51 and emits light upward, and the light guide plate 40 is located above the first light source 21. ..
  • the lighting devices 10a to 10c also have a similar configuration.
  • Such a lighting device 10 can realize an indoor space 60 in which a wide area on the ceiling side can be seen shining while maintaining the function of connecting equipment to the wiring duct 50.
  • the first light source 21 is connected to the lower surface of the first wiring duct 51 and emits light downward, and the light guide plate 40d is located below the first light source. ..
  • the lighting devices 10e to 10g also have a similar configuration.
  • the first light source 21 is connected to the outer surface of the first wiring duct 51 and emits light toward the side, and the light guide plate 40i is the first wiring duct 51 and the second. It is located between the wiring ducts 52.
  • Such a lighting device 10i can realize an indoor space 60 in which a wide area on the ceiling side can be seen shining while maintaining the function of connecting equipment to the wiring duct 50.
  • the first light source 21 is connected to the lower surface of the first wiring duct 51 and emits light toward the side, and the light guide plate 40h is located below the first light source 21. do.
  • a material having substantially the same refractive index as the optical component is formed in the contact portion of the optical component and the portion through which light is transmitted.
  • the gap may be filled with optical grease or the like). This prevents air from intervening in the gaps between the optical components.
  • the indoor space has been described as a space for office use, but it may be a space for store use or a space for other purposes.
  • the plurality of wiring ducts may be arranged in a grid pattern using joint members. Also, the plurality of wiring ducts may be installed on the wall instead of the ceiling. That is, the luminaire may be installed on the wall.
  • a so-called SMD type light emitting module is used as the light source, but the specific mode of the light source is not particularly limited.
  • a COB (Chip On Board) type light emitting module may be used as the light source.
  • a light emitting module including a solid light emitting element other than the LED such as an organic EL element or an inorganic EL element may be used.
  • the present invention may be realized as the lighting system of the above embodiment.
  • the present invention may be realized as a wiring duct unit in which the above-described embodiment, a wiring duct, and a light source are unitized. If such a wiring duct unit is already installed, a lighting device (lighting system) can be easily realized later by retrofitting a light guide plate.
  • the wiring duct unit may include a light guide path.

Abstract

An illumination device (10) comprises: a first light source (21) which is connected to, from between a first wiring duct (51) and a second wiring duct (52) that run mutually parallel with a space therebetween, the first wiring duct (51), and which emits light using power supplied from the first wiring duct (51); and a light guide plate (40) which bridges the first wiring duct (51) and the second wiring duct (52), and which surface-emits light upon input of light emitted by the first light source (21).

Description

照明装置Lighting device
　本発明は、導光板を備える照明装置に関する。 The present invention relates to a lighting device including a light guide plate.
　近年、ＬＥＤ（Ｌｉｇｈｔ　Ｅｍｉｔｔｉｎｇ　Ｄｉｏｄｅ）を光源として備える照明装置が普及しつつある。例えば、特許文献１には、高輝度で輝度の均一な面状発光装置が開示されている。 In recent years, lighting devices equipped with LEDs (Light Emitting Diodes) as light sources are becoming widespread. For example, Patent Document 1 discloses a planar light emitting device having high brightness and uniform brightness.
特開２００４－１２７９３１号公報Japanese Unexamined Patent Publication No. 2004-127931
　照明装置を取り付ける際に、配線ダクトを利用する場合がある。配線ダクトは、照明装置の取り付けに用いられる長尺状の構造体であり、ダクトレールまたはスライドコンセントなどとも呼ばれる。 When installing the lighting device, a wiring duct may be used. The wiring duct is a long structure used for attaching a lighting device, and is also called a duct rail or a slide outlet.
　本発明は、複数の配線ダクトの間の広い範囲を発光領域にすることができる照明装置を提供する。 The present invention provides a lighting device capable of setting a wide range between a plurality of wiring ducts as a light emitting region.
　本発明の一態様に係る照明装置は、間隔をあけて並走する第一配線ダクト及び第二配線ダクトのうち前記第一配線ダクトに接続され、前記第一配線ダクトから供給される電力を用いて光を発する第一光源と、前記第一配線ダクト及び前記第二配線ダクトに橋渡しされ、前記第一光源が発する光が入射することにより面発光する導光板とを備える。 The lighting device according to one aspect of the present invention uses the electric power supplied from the first wiring duct connected to the first wiring duct among the first wiring duct and the second wiring duct running in parallel at intervals. It is provided with a first light source that emits light, and a light guide plate that is bridged to the first wiring duct and the second wiring duct and emits surface light when the light emitted by the first light source is incident.
　本発明の照明装置は、複数の配線ダクトの間の広い範囲を発光領域にすることができる。 The lighting device of the present invention can make a wide range between a plurality of wiring ducts a light emitting region.
図１は、実施の形態１に係る照明システムの外観斜視図である。FIG. 1 is an external perspective view of the lighting system according to the first embodiment. 図２は、実施の形態１に係る照明装置の構成例１を示す図（上面図）である。FIG. 2 is a view (top view) showing a configuration example 1 of the lighting device according to the first embodiment. 図３は、実施の形態１に係る照明装置の構成例１を示す図（断面図）である。FIG. 3 is a diagram (cross-sectional view) showing a configuration example 1 of the lighting device according to the first embodiment. 図４は、実施の形態１に係る照明装置の構成例２を示す図（断面図）である。FIG. 4 is a diagram (cross-sectional view) showing a configuration example 2 of the lighting device according to the first embodiment. 図５は、実施の形態１に係る照明装置の構成例３を示す図（断面図）である。FIG. 5 is a diagram (cross-sectional view) showing a configuration example 3 of the lighting device according to the first embodiment. 図６は、実施の形態１に係る照明装置の構成例４を示す図（断面図）である。FIG. 6 is a diagram (cross-sectional view) showing a configuration example 4 of the lighting device according to the first embodiment. 図７は、実施の形態２に係る照明システムの外観斜視図である。FIG. 7 is an external perspective view of the lighting system according to the second embodiment. 図８は、実施の形態２に係る照明装置の構成例１を示す図（上面図）である。FIG. 8 is a view (top view) showing a configuration example 1 of the lighting device according to the second embodiment. 図９は、実施の形態２に係る照明装置の構成例１を示す図（断面図）である。FIG. 9 is a diagram (cross-sectional view) showing a configuration example 1 of the lighting device according to the second embodiment. 図１０は、実施の形態２に係る照明装置の構成例２を示す図（断面図）である。FIG. 10 is a diagram (cross-sectional view) showing a configuration example 2 of the lighting device according to the second embodiment. 図１１は、実施の形態２に係る照明装置の構成例３を示す図（断面図）である。FIG. 11 is a diagram (cross-sectional view) showing a configuration example 3 of the lighting device according to the second embodiment. 図１２は、実施の形態２に係る照明装置の構成例４を示す図（断面図）である。FIG. 12 is a diagram (cross-sectional view) showing a configuration example 4 of the lighting device according to the second embodiment. 図１３は、実施の形態２に係る照明装置の構成例５を示す図（断面図）である。FIG. 13 is a diagram (cross-sectional view) showing a configuration example 5 of the lighting device according to the second embodiment. 図１４は、実施の形態３に係る照明装置の断面図である。FIG. 14 is a cross-sectional view of the lighting device according to the third embodiment.
　以下、実施の形態について、図面を参照しながら説明する。以下で説明する実施の形態は、いずれも包括的または具体的な例を示すものである。以下の実施の形態で示される数値、形状、材料、構成要素、構成要素の配置位置及び接続形態などは、一例であり、本発明を限定する主旨ではない。また、以下の実施の形態における構成要素のうち、最上位概念を示す独立請求項に記載されていない構成要素については、任意の構成要素として説明される。 Hereinafter, embodiments will be described with reference to the drawings. Each of the embodiments described below provides a comprehensive or specific example. Numerical values, shapes, materials, components, arrangement positions of components, connection forms, and the like shown in the following embodiments are examples, and are not intended to limit the present invention. Further, among the components in the following embodiments, the components not described in the independent claims indicating the highest level concept are described as arbitrary components.
　また、各図は模式図であり、必ずしも厳密に図示されたものではない。また、各図において、実質的に同一の構成に対しては同一の符号を付し、重複する説明は省略または簡略化される場合がある。また、以下の実施の形態において、「ほぼ」または「略」の表現には、製造誤差や寸法公差等を含むという意味もある。 Also, each figure is a schematic diagram and is not necessarily exactly illustrated. Further, in each figure, substantially the same configuration may be designated by the same reference numerals, and duplicate description may be omitted or simplified. Further, in the following embodiments, the expression "almost" or "abbreviation" also means that a manufacturing error, a dimensional tolerance, or the like is included.
　また、以下の実施の形態で説明に用いられる図面においては座標軸が示される場合がある。Ｚ軸方向は、照明装置の高さ方向として説明される。Ｚ軸＋側は、上側（上方）と表現され、Ｚ軸－側は、下側（下方）と表現される場合がある。また、Ｘ軸方向及びＹ軸方向は、Ｚ軸方向に垂直な平面上において、互いに直交する方向である。以下の実施の形態において、平面視とは、Ｚ軸方向から見ることを意味する。 In addition, coordinate axes may be shown in the drawings used for explanation in the following embodiments. The Z-axis direction is described as the height direction of the illuminator. The Z-axis + side may be expressed as an upper side (upper side), and the Z-axis-side may be expressed as a lower side (lower side). Further, the X-axis direction and the Y-axis direction are directions orthogonal to each other on a plane perpendicular to the Z-axis direction. In the following embodiments, plan view means viewing from the Z-axis direction.
　（実施の形態１）
　［実施の形態１に係る照明システムの概要］
　以下、実施の形態１に係る照明システムの概要について説明する。図１は、実施の形態１に係る照明システムの外観斜視図である。 (Embodiment 1)
[Outline of the lighting system according to the first embodiment]
Hereinafter, the outline of the lighting system according to the first embodiment will be described. FIG. 1 is an external perspective view of the lighting system according to the first embodiment.
　図１に示されるように、実施の形態１に係る照明システム１００は、複数の照明装置１０（図１では１つだけ図示）と、複数の配線ダクト５０とを備える。複数の配線ダクト５０は、オフィスなど室内空間６０の天井から吊り下げ、あるいは、天井に取り付けられており、間隔をあけて並走するように配置される。複数の照明装置１０のそれぞれは、面発光する導光板４０を備えており、複数の照明装置１０は、複数の配線ダクト５０を橋渡しするように敷き詰められる。これにより、照明システム１００は、天井側の広範囲が光って見えるような室内空間６０を実現することができる。 As shown in FIG. 1, the lighting system 100 according to the first embodiment includes a plurality of lighting devices 10 (only one is shown in FIG. 1) and a plurality of wiring ducts 50. The plurality of wiring ducts 50 are suspended from the ceiling of the indoor space 60 such as an office, or are attached to the ceiling, and are arranged so as to run in parallel at intervals. Each of the plurality of lighting devices 10 includes a light guide plate 40 that emits light from the surface, and the plurality of lighting devices 10 are laid out so as to bridge the plurality of wiring ducts 50. As a result, the lighting system 100 can realize an indoor space 60 in which a wide area on the ceiling side can be seen shining.
　また、照明システム１００では、複数の照明装置１０は、複数の配線ダクト５０よりも上方に位置する。これにより、複数の配線ダクト５０のそれぞれの下側（Ｚ軸－側）に形成された溝に機器を取り付けることができる。つまり、照明システム１００は、配線ダクト５０の主機能を維持したまま、天井側の広範囲が光って見えるような室内空間６０を実現することができる。 Further, in the lighting system 100, the plurality of lighting devices 10 are located above the plurality of wiring ducts 50. As a result, the device can be attached to the groove formed on the lower side (Z-axis-side) of each of the plurality of wiring ducts 50. That is, the lighting system 100 can realize an indoor space 60 in which a wide area on the ceiling side can be seen shining while maintaining the main function of the wiring duct 50.
　ここで、配線ダクト５０について補足する。配線ダクト５０は、下側に溝が形成される長尺状の部材であり、内部に給電端子を備える。配線ダクト５０は、ダクトレールなどと呼ばれる場合もある。配線ダクト５０には、上記溝に適合する取り付け構造を有する、コンセントまたは照明装置などの機器が取り付けられ、配線ダクト５０は、これらの機器に上記給電端子を介して電力を供給することができる。また、配線ダクト５０は、給電端子に加えて情報伝達用の端子を内部に備えてもよい。 Here, supplement the wiring duct 50. The wiring duct 50 is a long member having a groove formed on the lower side, and is provided with a power supply terminal inside. The wiring duct 50 may be called a duct rail or the like. Equipment such as an outlet or a lighting device having a mounting structure suitable for the groove is attached to the wiring duct 50, and the wiring duct 50 can supply electric power to these devices via the power supply terminal. Further, the wiring duct 50 may be provided with a terminal for transmitting information in addition to the power feeding terminal.
　複数の配線ダクト５０のそれぞれは、長手方向がＹ軸方向に沿うように配置される。また、複数の配線ダクト５０は、Ｘ軸方向に間隔をあけて配置される。つまり、複数の配線ダクト５０は、間隔をあけて並走する。 Each of the plurality of wiring ducts 50 is arranged so that the longitudinal direction is along the Y-axis direction. Further, the plurality of wiring ducts 50 are arranged at intervals in the X-axis direction. That is, the plurality of wiring ducts 50 run in parallel at intervals.
　［実施の形態１に係る照明装置の構成例１］
　次に、照明システム１００が備える照明装置１０の具体的な構成について説明する。図２は、照明装置１０の上面図であり、図３は、照明装置１０の断面図（図２のＩＩＩ－ＩＩＩ線における断面図）である。 [Structure 1 of the lighting device according to the first embodiment]
Next, a specific configuration of the lighting device 10 included in the lighting system 100 will be described. FIG. 2 is a top view of the lighting device 10, and FIG. 3 is a cross-sectional view of the lighting device 10 (cross-sectional view taken along the line III-III of FIG. 2).
　なお、図２及び図３では、２つの照明装置１０が示されている。図２及び図３に示される第一配線ダクト５１及び第二配線ダクト５２は、図１に示される複数の配線ダクト５０のうちの隣り合う２つである。 Note that, in FIGS. 2 and 3, two lighting devices 10 are shown. The first wiring duct 51 and the second wiring duct 52 shown in FIGS. 2 and 3 are two adjacent wiring ducts 50 among the plurality of wiring ducts 50 shown in FIG.
　照明装置１０は、第一光源２１と、第二光源２２と、第一導光路３１と、第二導光路３２と、導光板４０とを備える。なお、照明装置１０は、少なくとも第一光源２１を備えていればよく、第二光源２２を備えることは必須ではない。 The lighting device 10 includes a first light source 21, a second light source 22, a first light guide path 31, a second light guide path 32, and a light guide plate 40. The lighting device 10 may include at least the first light source 21, and it is not essential that the lighting device 10 includes the second light source 22.
　第一光源２１は、第一配線ダクト５１の上面に接続（載置）され、第一配線ダクト５１から供給される電力を用いて上方に向けて光を発する発光モジュールである。第一光源２１は、基板２１ａと、発光素子２１ｂとを有する。 The first light source 21 is a light emitting module that is connected (mounted) on the upper surface of the first wiring duct 51 and emits light upward by using the electric power supplied from the first wiring duct 51. The first light source 21 has a substrate 21a and a light emitting element 21b.
　基板２１ａは、図中のＹ軸方向に長い長尺矩形状の基板である。基板２１ａの長手方向は、Ｙ軸方向であり、基板２１ａの短手方向は、Ｘ軸方向である。なお、基板２１ａの形状は、特に限定されない。基板２１ａは、具体的には、樹脂基板、セラミック基板、または、メタルベース基板等のリジッド基板である。 The substrate 21a is a long rectangular substrate long in the Y-axis direction in the drawing. The longitudinal direction of the substrate 21a is the Y-axis direction, and the lateral direction of the substrate 21a is the X-axis direction. The shape of the substrate 21a is not particularly limited. Specifically, the substrate 21a is a rigid substrate such as a resin substrate, a ceramic substrate, or a metal base substrate.
　基板２１ａのうち複数の発光素子２１ｂが実装された主面である実装面は、導光板４０の第一主面４１に対向する。複数の発光素子２１ｂは、例えば、基板２１ａの長手方向に沿って一列に並んで配置される。 The mounting surface of the substrate 21a, which is the main surface on which the plurality of light emitting elements 21b are mounted, faces the first main surface 41 of the light guide plate 40. The plurality of light emitting elements 21b are arranged side by side in a row along the longitudinal direction of the substrate 21a, for example.
　発光素子２１ｂは、白色光を発する表面実装型（Ｓｕｒｆａｃｅ　Ｍｏｕｎｔ　Ｄｅｖｉｃｅ：ＳＭＤ型）のＬＥＤ素子である。表面実装型のＬＥＤ素子とは、樹脂成型されたキャビティの中にＬＥＤチップを実装し、かつ、当該キャビティ内に蛍光体含有樹脂を封入したパッケージ型のＬＥＤ素子である。発光素子２１ｂは、第一導光路３１の他方の端部に向けて、例えば、昼光色～電球色（色温度２６００Ｋ以上７１００Ｋ以下）の白色光を発する。 The light emitting element 21b is a surface mount type (Surface Mount Device: SMD type) LED element that emits white light. The surface mount type LED element is a package type LED element in which an LED chip is mounted in a resin-molded cavity and a phosphor-containing resin is sealed in the cavity. The light emitting element 21b emits white light of, for example, daylight color to light bulb color (color temperature of 2600 K or more and 7100 K or less) toward the other end of the first light guide path 31.
　なお、第一光源２１は、ケーブルまたはＦＰＣなどの接続部材２１ｃによって、第一配線ダクト５１内の給電端子５１ａに電気的に接続される。また、第一光源２１は、より詳細には、電力変換回路（図示せず）を介して第一配線ダクト５１内の給電端子に電気的に接続される。第一配線ダクト５１から直流電力が供給される場合には、電力変換回路は、ＤＣ－ＤＣコンバータなどによって構成され、第一配線ダクト５１から交流電力が供給される場合には、電力変換回路は、ＡＣ－ＤＣコンバータ、及び、ＤＣ－ＤＣコンバータなどによって構成される。 The first light source 21 is electrically connected to the power supply terminal 51a in the first wiring duct 51 by a connecting member 21c such as a cable or an FPC. Further, in more detail, the first light source 21 is electrically connected to the power supply terminal in the first wiring duct 51 via a power conversion circuit (not shown). When DC power is supplied from the first wiring duct 51, the power conversion circuit is configured by a DC-DC converter or the like, and when AC power is supplied from the first wiring duct 51, the power conversion circuit is , AC-DC converter, DC-DC converter and the like.
　第一導光路３１は、導光板４０の内部に第一光源２１が発する光を導くための光学部材である。第一導光路３１は、一方の端部が第一主面４１のＸ軸＋側の端部に接続され、他方の端部に第一光源２１が発する光が入射する光学部材である。図３に示されるように、第一導光路３１の断面形状は、例えば、アーチ状である。第一導光路３１は、例えば、アクリルによって形成されるが、ポリカーボネートまたはガラスなどによって形成されてもよい。第一導光路３１は、導光板４０と一体的に形成されてもよいし、導光板４０とは別体であってもよい。 The first light guide path 31 is an optical member for guiding the light emitted by the first light source 21 inside the light guide plate 40. The first light guide path 31 is an optical member whose one end is connected to the X-axis + side end of the first main surface 41 and the light emitted by the first light source 21 is incident on the other end. As shown in FIG. 3, the cross-sectional shape of the first light guide path 31 is, for example, an arch shape. The first light guide path 31 is formed of, for example, acrylic, but may be formed of polycarbonate, glass, or the like. The first light guide path 31 may be formed integrally with the light guide plate 40, or may be a separate body from the light guide plate 40.
　第二光源２２は、第二配線ダクト５２の上面に接続（載置）され、第二配線ダクト５２から供給される電力を用いて光を発する発光モジュールである。第二光源２２の具体的構成は、第一光源２１と実質的に同一であるため説明が省略される。第二導光路３２は、導光板４０の内部に第二光源２２が発する光を導くための光学部材である。第二導光路３２の具体的構成は、第一導光路３１と実質的に同一であるため説明が省略される。 The second light source 22 is a light emitting module that is connected (mounted) on the upper surface of the second wiring duct 52 and emits light using the electric power supplied from the second wiring duct 52. Since the specific configuration of the second light source 22 is substantially the same as that of the first light source 21, the description thereof will be omitted. The second light guide path 32 is an optical member for guiding the light emitted by the second light source 22 inside the light guide plate 40. Since the specific configuration of the second light guide path 32 is substantially the same as that of the first light guide path 31, the description thereof will be omitted.
　導光板４０は、第一光源２１が発する光、及び、第二光源２２が発する光が入射することにより面発光する。導光板４０は、Ｚ軸方向から見た形状が矩形の平板状の光学部材である。導光板４０は、透明の部材であるが、透光性を有する部材であればよい。導光板４０は、例えば、アクリルによって形成されるが、ポリカーボネートまたはガラスなどによって形成されてもよい。 The light guide plate 40 emits surface light when the light emitted by the first light source 21 and the light emitted by the second light source 22 are incident. The light guide plate 40 is a flat plate-shaped optical member having a rectangular shape when viewed from the Z-axis direction. The light guide plate 40 is a transparent member, but may be a member having translucency. The light guide plate 40 is made of, for example, acrylic, but may be made of polycarbonate, glass, or the like.
　導光板４０は、第一主面４１及び第二主面４２を有する。第一主面４１は、第一光源２１（第一導光路３１）及び第二光源２２（第二導光路３２）と対向する主面である。第一主面４１は平面である。第一主面４１には、反射構造が設けられていないが、第二主面４２と同様に、反射構造として、微細な凹部が多数設けられていてもよい。 The light guide plate 40 has a first main surface 41 and a second main surface 42. The first main surface 41 is a main surface facing the first light source 21 (first light guide path 31) and the second light source 22 (second light guide path 32). The first main surface 41 is a flat surface. Although the first main surface 41 is not provided with a reflective structure, a large number of fine recesses may be provided as the reflective structure as in the case of the second main surface 42.
　第二主面４２は、第一主面４１と背向する主面であり、第一導光路３１及び第二導光路３２を介して導光板４０の内部に入射した光を反射する反射構造が設けられた主面である。第二主面４２には、反射構造として、微細な凹部（プリズム）が多数設けられる。凹部の断面形状は、例えば、Ｖ字状であるが、特に限定されない。 The second main surface 42 is a main surface facing back to the first main surface 41, and has a reflective structure that reflects light incident on the light guide plate 40 via the first light guide path 31 and the second light guide path 32. It is the main surface provided. The second main surface 42 is provided with a large number of fine recesses (prisms) as a reflective structure. The cross-sectional shape of the recess is, for example, V-shaped, but is not particularly limited.
　導光板４０は、第一配線ダクト５１及び第二配線ダクト５２の上方において、第一配線ダクト５１及び第二配線ダクト５２に橋渡しされる。言い換えれば、導光板４０は、第一配線ダクト５１及び第二配線ダクト５２にまたがって配置される。これにより、室内空間６０から照明装置１０を見上げた場合に、第一配線ダクト５１及び第二配線ダクト５２の間の領域の全部が発光する。このように、照明装置１０によれば、天井側の広範囲が光って見えるような室内空間６０を実現することができる。 The light guide plate 40 is bridged to the first wiring duct 51 and the second wiring duct 52 above the first wiring duct 51 and the second wiring duct 52. In other words, the light guide plate 40 is arranged so as to straddle the first wiring duct 51 and the second wiring duct 52. As a result, when the lighting device 10 is looked up from the indoor space 60, the entire region between the first wiring duct 51 and the second wiring duct 52 emits light. As described above, according to the lighting device 10, it is possible to realize an indoor space 60 in which a wide area on the ceiling side can be seen shining.
　［実施の形態１に係る照明装置の構成例２］
　次に、照明システム１００に用いられる照明装置の構成例２について説明する。図４は、照明装置の構成例２を示す図であり、具体的には、照明装置１０ａの断面図である。なお、照明装置１０ａの上面図については図示が省略される。以下の構成例２の説明では、構成例１との相違点を中心に説明が行われる。 [Structure 2 of the lighting device according to the first embodiment]
Next, configuration example 2 of the lighting device used in the lighting system 100 will be described. FIG. 4 is a diagram showing a configuration example 2 of the lighting device, and specifically, is a cross-sectional view of the lighting device 10a. The top view of the lighting device 10a is not shown. In the following description of the configuration example 2, the description will be focused on the differences from the configuration example 1.
　照明装置１０ａは、第一光源２１と、第二光源２２と、導光板４０ａとを備える。照明装置１０ａは、第一導光路３１及び第二導光路３２を備えておらず、導光板４０ａの端面（傾斜面）を反射面として利用することにより、第一光源２１が発する光、及び、第二光源２２が発する光を導光板４０ａの内部に導く。 The lighting device 10a includes a first light source 21, a second light source 22, and a light guide plate 40a. The lighting device 10a does not include the first light guide path 31 and the second light guide path 32, and by using the end surface (inclined surface) of the light guide plate 40a as a reflection surface, the light emitted by the first light source 21 and the light emitted by the first light source 21 are used. The light emitted by the second light source 22 is guided to the inside of the light guide plate 40a.
　具体的には、導光板４０ａが備える第一端面４３は、第一主面４１側が、第二主面４２側よりも外側（Ｘ軸＋側）に出っ張るように傾斜した傾斜面である。つまり、第一端面４３は、第一主面４１（または第二主面４２）に対して９０°と異なる角度（例えば、４５°）をなす平面である。このような第一端面４３によれば、第一光源２１が発する光は、第一端面４３で反射されて導光板４０ａの内部に導かれる。 Specifically, the first end surface 43 included in the light guide plate 40a is an inclined surface in which the first main surface 41 side is inclined so as to protrude outward (X-axis + side) from the second main surface 42 side. That is, the first end surface 43 is a plane having an angle (for example, 45 °) different from 90 ° with respect to the first main surface 41 (or the second main surface 42). According to such a first end surface 43, the light emitted by the first light source 21 is reflected by the first end surface 43 and guided to the inside of the light guide plate 40a.
　また、導光板４０ａが備える第二端面４４は、第一主面４１側が、第二主面４２側よりも外側（Ｘ軸－側）に出っ張るように傾斜した傾斜面である。つまり、第二端面４４は、第一主面４１（または第二主面４２）に対して９０°と異なる角度（例えば、４５°）をなす平面である。このような第二端面４４によれば、第二光源２２が発する光は、第二端面４４で反射されて導光板４０ａの内部に導かれる。 Further, the second end surface 44 included in the light guide plate 40a is an inclined surface in which the first main surface 41 side is inclined so as to protrude outward (X-axis-side) from the second main surface 42 side. That is, the second end surface 44 is a plane having an angle (for example, 45 °) different from 90 ° with respect to the first main surface 41 (or the second main surface 42). According to such a second end surface 44, the light emitted by the second light source 22 is reflected by the second end surface 44 and guided to the inside of the light guide plate 40a.
　以上説明したように、導光板４０ａの第一端面４３及び第二端面４４が傾斜面であれば、導光路を省略することができる。照明システム１００は、照明装置１０に代えてこのような照明装置１０ａを備えてもよい。 As described above, if the first end surface 43 and the second end surface 44 of the light guide plate 40a are inclined surfaces, the light guide path can be omitted. The lighting system 100 may include such a lighting device 10a instead of the lighting device 10.
　［実施の形態１に係る照明装置の構成例３］
　次に、照明システム１００に用いられる照明装置の構成例３について説明する。図５は、照明装置の構成例３を示す図であり、具体的には、照明装置１０ｂの断面図である。なお、照明装置１０ｂの上面図については図示が省略される。以下の構成例３の説明では、構成例２との相違点を中心に説明が行われる。 [Structure 3 of the lighting device according to the first embodiment]
Next, a configuration example 3 of the lighting device used in the lighting system 100 will be described. FIG. 5 is a diagram showing a configuration example 3 of the lighting device, specifically, is a cross-sectional view of the lighting device 10b. The top view of the lighting device 10b is not shown. In the following description of the configuration example 3, the description will be focused on the differences from the configuration example 2.
　照明装置１０ｂは、第一光源２１と、第二光源２２と、導光板４０ｂとを備える。導光板４０ｂの第一主面４１のうち第一光源２１と対向する領域には、コリメートレンズ構造４５が設けられる。コリメートレンズ構造４５は、第一光源２１が発する光をコリメートする（平行光化する）ための光学構造である。コリメートレンズ構造４５は、導光板４０ｂと一体的に形成されてもよいし、導光板４０ｂとは別に形成され、導光板４０ｂに取り付けられてもよい。 The lighting device 10b includes a first light source 21, a second light source 22, and a light guide plate 40b. A collimating lens structure 45 is provided in a region of the first main surface 41 of the light guide plate 40b facing the first light source 21. The collimating lens structure 45 is an optical structure for collimating (parallelizing) the light emitted by the first light source 21. The collimating lens structure 45 may be formed integrally with the light guide plate 40b, or may be formed separately from the light guide plate 40b and attached to the light guide plate 40b.
　また、導光板４０ｂの第一主面４１のうち第二光源２２と対向する領域には、コリメートレンズ構造４６が設けられる。コリメートレンズ構造４６は、第二光源２２が発する光をコリメートする（平行光化する）ための光学構造である。コリメートレンズ構造４６は、導光板４０ｂと一体的に形成されてもよいし、導光板４０ｂとは別に形成され、導光板４０ｂに取り付けられてもよい。 Further, a collimating lens structure 46 is provided in a region of the first main surface 41 of the light guide plate 40b facing the second light source 22. The collimated lens structure 46 is an optical structure for collimating (parallelizing) the light emitted by the second light source 22. The collimating lens structure 46 may be formed integrally with the light guide plate 40b, or may be formed separately from the light guide plate 40b and attached to the light guide plate 40b.
　以上説明したような導光板４０ｂにおいては、第一光源２１が発する光は、コリメートレンズ構造４５によってコリメートされた後、第一端面４３で反射されて導光板４０ｂの内部に導かれる。また、第二光源２２が発する光は、コリメートレンズ構造４６によってコリメートされた後、第二端面４４で反射されて導光板４０ｂの内部に導かれる。これにより、導光板４０ｂの発光面輝度の均一化を図ることができる。照明システム１００は、照明装置１０に代えてこのような照明装置１０ｂを備えてもよい。 In the light guide plate 40b as described above, the light emitted by the first light source 21 is collimated by the collimating lens structure 45, then reflected by the first end surface 43 and guided to the inside of the light guide plate 40b. Further, the light emitted by the second light source 22 is collimated by the collimating lens structure 46, then reflected by the second end surface 44 and guided to the inside of the light guide plate 40b. As a result, the brightness of the light emitting surface of the light guide plate 40b can be made uniform. The lighting system 100 may include such a lighting device 10b instead of the lighting device 10.
　［実施の形態１に係る照明装置の構成例４］
　次に、照明システム１００に用いられる照明装置の構成例４について説明する。図６は、照明装置の構成例４を示す図であり、具体的には、照明装置１０ｃの断面図である。なお、照明装置１０ｃの上面図については図示が省略される。以下の構成例４の説明では、構成例２との相違点を中心に説明が行われる。 [Structure example 4 of the lighting device according to the first embodiment]
Next, a configuration example 4 of the lighting device used in the lighting system 100 will be described. FIG. 6 is a diagram showing a configuration example 4 of the lighting device, specifically, is a cross-sectional view of the lighting device 10c. The top view of the lighting device 10c is not shown. In the following description of the configuration example 4, the description will be focused on the differences from the configuration example 2.
　照明装置１０ｃは、第一光源２１と、導光板４０ｃとを備える。照明装置１０ｃは、第二光源２２を備えておらず、導光板４０ｃの第一端面４３（傾斜面）を反射面として利用することにより、第一光源２１が発する光を導光板４０ａの内部に導く。 The lighting device 10c includes a first light source 21 and a light guide plate 40c. The lighting device 10c does not include the second light source 22, and by using the first end surface 43 (inclined surface) of the light guide plate 40c as a reflection surface, the light emitted by the first light source 21 is inside the light guide plate 40a. Guide.
　また、導光板４０ｃが備える第二端面４４ｃは、第二主面４２側が、第一主面４１側よりも外側（Ｘ軸－側）に出っ張るように傾斜した傾斜面である。第二端面４４ｃは、第一主面４１（または第二主面４２）に対して９０°と異なる角度（例えば、４５°）をなす平面である。このような第二端面４４ｃによれば、Ｘ軸方向において隣り合う導光板４０ｃ同士を近接させることができる。隣り合う導光板４０ｃ同士を近接されれば、室内空間６０から複数の照明装置１０ｃを見上げた場合に、第二配線ダクト５２の近傍が暗くなってしまうことを抑制することができる。照明システム１００は、照明装置１０に代えてこのような照明装置１０ｃを備えてもよい。 Further, the second end surface 44c included in the light guide plate 40c is an inclined surface in which the second main surface 42 side is inclined so as to protrude outward (X-axis-side) from the first main surface 41 side. The second end surface 44c is a plane having an angle (for example, 45 °) different from 90 ° with respect to the first main surface 41 (or the second main surface 42). According to such a second end surface 44c, adjacent light guide plates 40c can be brought close to each other in the X-axis direction. If the adjacent light guide plates 40c are brought close to each other, it is possible to prevent the vicinity of the second wiring duct 52 from becoming dark when looking up at the plurality of lighting devices 10c from the indoor space 60. The lighting system 100 may include such a lighting device 10c instead of the lighting device 10.
　なお、照明装置１０ｃにおいて、導光板４０ｃの第一主面４１のうち第一光源２１と対向する領域に、コリメートレンズ構造４５が設けられてもよい。 In the lighting device 10c, the collimating lens structure 45 may be provided in the region of the first main surface 41 of the light guide plate 40c facing the first light source 21.
　（実施の形態２）
　［実施の形態２に係る照明システムの概要］
　以下、実施の形態２に係る照明システムの概要について説明する。図７は、実施の形態２に係る照明システムの外観斜視図である。 (Embodiment 2)
[Outline of the lighting system according to the second embodiment]
Hereinafter, the outline of the lighting system according to the second embodiment will be described. FIG. 7 is an external perspective view of the lighting system according to the second embodiment.
　図７に示されるように、実施の形態２に係る照明システム１００ａは、複数の照明装置１０ｄ（図７では１つだけ図示）と、複数の配線ダクト５０とを備える。複数の配線ダクト５０は、間隔をあけて並走するように、オフィスなど室内空間６０の天井に設置される。照明システム１００ａでは、照明システム１００と異なり、複数の照明装置１０ｄは、複数の配線ダクト５０よりも下方に位置する。これにより、配線ダクト５０が複数の照明装置１０ｄが発する光を遮らないため、照明システム１００ａは、天井側の広範囲が光って見えるような室内空間６０を容易に実現することができる。 As shown in FIG. 7, the lighting system 100a according to the second embodiment includes a plurality of lighting devices 10d (only one is shown in FIG. 7) and a plurality of wiring ducts 50. The plurality of wiring ducts 50 are installed on the ceiling of an indoor space 60 such as an office so as to run in parallel at intervals. In the lighting system 100a, unlike the lighting system 100, the plurality of lighting devices 10d are located below the plurality of wiring ducts 50. As a result, since the wiring duct 50 does not block the light emitted by the plurality of lighting devices 10d, the lighting system 100a can easily realize the indoor space 60 in which a wide area on the ceiling side can be seen shining.
　［実施の形態２に係る照明装置の構成例１］
　次に、照明システム１００ａが備える照明装置１０ｄの具体的な構成について説明する。図８は、照明装置１０ｄの上面図であり、図９は、照明装置１０ｄの断面図（図８のＩＸ－ＩＸ線における断面図）である。 [Structure 1 of the lighting device according to the second embodiment]
Next, a specific configuration of the lighting device 10d included in the lighting system 100a will be described. FIG. 8 is a top view of the lighting device 10d, and FIG. 9 is a cross-sectional view of the lighting device 10d (cross-sectional view taken along the line IX-IX of FIG. 8).
　なお、図８及び図９では、２つの照明装置１０ｄが示されている。図８及び図９に示される第一配線ダクト５１及び第二配線ダクト５２は、図７に示される複数の配線ダクト５０のうちの隣り合う２つである。 Note that, in FIGS. 8 and 9, two lighting devices 10d are shown. The first wiring duct 51 and the second wiring duct 52 shown in FIGS. 8 and 9 are two adjacent two of the plurality of wiring ducts 50 shown in FIG. 7.
　照明装置１０ｄは、第一光源２１と、第二光源２２と、第一導光路３１と、第二導光路３２と、導光板４０ｄとを備える。なお、照明装置１０ｄは、少なくとも第一光源２１を備えていればよく、第二光源２２を備えることは必須ではない。以下、照明装置１０ｄの照明装置１０との相違点について説明する。照明装置１０ｄにおいて、照明装置１０と実質的に同一の事項の説明は適宜省略される。 The lighting device 10d includes a first light source 21, a second light source 22, a first light guide path 31, a second light guide path 32, and a light guide plate 40d. The lighting device 10d may include at least the first light source 21, and it is not essential that the lighting device 10d includes the second light source 22. Hereinafter, the differences between the lighting device 10d and the lighting device 10 will be described. In the lighting device 10d, the description of substantially the same matters as the lighting device 10 is omitted as appropriate.
　第一光源２１及び第二光源２２は、第一配線ダクト５１の下面（下側）に接続され、下方に向けて光を発する。第一光源２１は、例えば、第一配線ダクト５１の溝に適合する取り付け構造などの接続部材２１ｃによって、第一配線ダクト５１内の給電端子５１ａに電気的及び構造的に接続される。第二光源２２についても同様である。 The first light source 21 and the second light source 22 are connected to the lower surface (lower side) of the first wiring duct 51 and emit light downward. The first light source 21 is electrically and structurally connected to the power supply terminal 51a in the first wiring duct 51 by, for example, a connecting member 21c such as a mounting structure that fits in the groove of the first wiring duct 51. The same applies to the second light source 22.
　導光板４０ｄは、第一主面４１及び第二主面４２を有する。第一主面４１は、第一光源２１（第一導光路３１）及び第二光源２２（第二導光路３２）と対向する主面である。第一主面４１は、第一導光路３１及び第二導光路３２が接続され、第一導光路３１及び第二導光路３２を介して導光板４０ｄの内部に入射した光を反射する反射構造が設けられた主面である。第一主面４１には、反射構造として、微細な凹部（プリズム）が多数設けられる。凹部の断面形状は、例えば、Ｖ字状であるが、特に限定されない。 The light guide plate 40d has a first main surface 41 and a second main surface 42. The first main surface 41 is a main surface facing the first light source 21 (first light guide path 31) and the second light source 22 (second light guide path 32). The first main surface 41 has a reflection structure in which the first light guide path 31 and the second light guide path 32 are connected and the light incident on the inside of the light guide plate 40d is reflected through the first light guide path 31 and the second light guide path 32. Is the main surface provided with. The first main surface 41 is provided with a large number of fine recesses (prisms) as a reflective structure. The cross-sectional shape of the recess is, for example, V-shaped, but is not particularly limited.
　第二主面４２は、第一主面４１と背向する主面であり、平面である。第二主面４２には、反射構造が設けられていないが、第一主面４１と同様に、反射構造として、微細な凹部が多数設けられていてもよい。 The second main surface 42 is a main surface facing the first main surface 41 and is a flat surface. Although the second main surface 42 is not provided with a reflective structure, a large number of fine recesses may be provided as the reflective structure as in the case of the first main surface 41.
　導光板４０ｄは、第一配線ダクト５１及び第二配線ダクト５２の下方において、第一配線ダクト５１及び第二配線ダクト５２に橋渡しされる。言い換えれば、導光板４０ｄは、第一配線ダクト５１及び第二配線ダクト５２にまたがって配置される。導光板４０ｄの端部は、第一光源２１の下方、及び、第二光源２２の下方にまで達している。これにより、室内空間６０から照明装置１０ｄを見上げた場合に、第一配線ダクト５１及び第二配線ダクト５２は、導光板４０に覆われて直接視認できなくなる。このように、照明装置１０ｄによれば、天井側の広範囲が光って見えるような室内空間６０を容易に実現することができる。 The light guide plate 40d is bridged to the first wiring duct 51 and the second wiring duct 52 below the first wiring duct 51 and the second wiring duct 52. In other words, the light guide plate 40d is arranged so as to straddle the first wiring duct 51 and the second wiring duct 52. The end of the light guide plate 40d reaches below the first light source 21 and below the second light source 22. As a result, when the lighting device 10d is looked up from the indoor space 60, the first wiring duct 51 and the second wiring duct 52 are covered with the light guide plate 40 and cannot be directly seen. As described above, according to the lighting device 10d, it is possible to easily realize the indoor space 60 in which a wide area on the ceiling side can be seen shining.
　［実施の形態２に係る照明装置の構成例２］
　次に、照明システム１００ａに用いられる照明装置の構成例２について説明する。図１０は、照明装置の構成例２を示す図であり、具体的には、照明装置１０ｅの断面図である。なお、照明装置１０ｅの上面図については図示が省略される。以下の構成例２の説明では、構成例１との相違点を中心に説明が行われる。 [Structure 2 of the lighting device according to the second embodiment]
Next, a configuration example 2 of the lighting device used in the lighting system 100a will be described. FIG. 10 is a diagram showing a configuration example 2 of the lighting device, specifically, is a cross-sectional view of the lighting device 10e. The top view of the lighting device 10e is not shown. In the following description of the configuration example 2, the description will be focused on the differences from the configuration example 1.
　照明装置１０ｅは、第一光源２１と、第二光源２２と、導光板４０ｅとを備える。照明装置１０ｅは、第一導光路３１及び第二導光路３２を備えておらず、導光板４０ｅの端面（傾斜面）を反射面として利用することにより、第一光源２１が発する光、及び、第二光源２２が発する光を導光板４０ｅの内部に導く。 The lighting device 10e includes a first light source 21, a second light source 22, and a light guide plate 40e. The lighting device 10e does not include the first light guide path 31 and the second light guide path 32, and by using the end surface (inclined surface) of the light guide plate 40e as a reflection surface, the light emitted by the first light source 21 and the light emitted by the first light source 21 are used. The light emitted by the second light source 22 is guided to the inside of the light guide plate 40e.
　具体的には、導光板４０ｅが備える第一端面４３は、第一主面４１側が、第二主面４２側よりも外側（Ｘ軸＋側）に出っ張るように傾斜した傾斜面である。つまり、第一端面４３は、第一主面４１（または第二主面４２）に対して９０°と異なる角度（例えば、４５°）をなす平面である。このような第一端面４３によれば、第一光源２１が発する光は、第一端面４３で反射されて導光板４０ｅの内部に導かれる。 Specifically, the first end surface 43 included in the light guide plate 40e is an inclined surface in which the first main surface 41 side is inclined so as to protrude outward (X-axis + side) from the second main surface 42 side. That is, the first end surface 43 is a plane having an angle (for example, 45 °) different from 90 ° with respect to the first main surface 41 (or the second main surface 42). According to such a first end surface 43, the light emitted by the first light source 21 is reflected by the first end surface 43 and guided to the inside of the light guide plate 40e.
　また、導光板４０ｅが備える第二端面４４は、第一主面４１側が、第二主面４２側よりも外側（Ｘ軸－側）に出っ張るように傾斜した傾斜面である。つまり、第二端面４４は、第一主面４１（または第二主面４２）に対して９０°と異なる角度（例えば、４５°）をなす平面である。このような第二端面４４によれば、第二光源２２が発する光は、第二端面４４で反射されて導光板４０ａの内部に導かれる。 Further, the second end surface 44 included in the light guide plate 40e is an inclined surface in which the first main surface 41 side is inclined so as to protrude outward (X-axis-side) from the second main surface 42 side. That is, the second end surface 44 is a plane having an angle (for example, 45 °) different from 90 ° with respect to the first main surface 41 (or the second main surface 42). According to such a second end surface 44, the light emitted by the second light source 22 is reflected by the second end surface 44 and guided to the inside of the light guide plate 40a.
　以上説明したように、導光板４０ｅの第一端面４３及び第二端面４４が傾斜面であれば、導光路を省略することができる。照明システム１００ａは、照明装置１０ｄに代えてこのような照明装置１０ｅを備えてもよい。 As described above, if the first end surface 43 and the second end surface 44 of the light guide plate 40e are inclined surfaces, the light guide path can be omitted. The lighting system 100a may include such a lighting device 10e instead of the lighting device 10d.
　［実施の形態２に係る照明装置の構成例３］
　次に、照明システム１００ａに用いられる照明装置の構成例３について説明する。図１１は、照明装置の構成例３を示す図であり、具体的には、照明装置１０ｆの断面図である。なお、照明装置１０ｆの上面図については図示が省略される。以下の構成例３の説明では、構成例２との相違点を中心に説明が行われる。 [Structure 3 of the lighting device according to the second embodiment]
Next, a configuration example 3 of the lighting device used in the lighting system 100a will be described. FIG. 11 is a diagram showing a configuration example 3 of the lighting device, specifically, is a cross-sectional view of the lighting device 10f. The top view of the lighting device 10f is not shown. In the following description of the configuration example 3, the description will be focused on the differences from the configuration example 2.
　照明装置１０ｆは、第一光源２１と、第二光源２２と、導光板４０ｆとを備える。導光板４０ｆの第一主面４１のうち第一光源２１と対向する領域には、コリメートレンズ構造４５が設けられる。コリメートレンズ構造４５は、第一光源２１が発する光をコリメートする（平行光化する）ための光学構造である。コリメートレンズ構造４５は、導光板４０ｆと一体的に形成されてもよいし、導光板４０ｆとは別に形成され、導光板４０ｆに取り付けられてもよい。 The lighting device 10f includes a first light source 21, a second light source 22, and a light guide plate 40f. A collimating lens structure 45 is provided in a region of the first main surface 41 of the light guide plate 40f facing the first light source 21. The collimating lens structure 45 is an optical structure for collimating (parallelizing) the light emitted by the first light source 21. The collimating lens structure 45 may be formed integrally with the light guide plate 40f, or may be formed separately from the light guide plate 40f and attached to the light guide plate 40f.
　また、導光板４０ｆの第一主面４１のうち第二光源２２と対向する領域には、コリメートレンズ構造４６が設けられる。コリメートレンズ構造４６は、第二光源２２が発する光をコリメートする（平行光化する）ための光学構造である。コリメートレンズ構造４６は、導光板４０ｆと一体的に形成されてもよいし、導光板４０ｆとは別に形成され、導光板４０ｆに取り付けられてもよい。 Further, a collimating lens structure 46 is provided in a region of the first main surface 41 of the light guide plate 40f facing the second light source 22. The collimated lens structure 46 is an optical structure for collimating (parallelizing) the light emitted by the second light source 22. The collimating lens structure 46 may be formed integrally with the light guide plate 40f, or may be formed separately from the light guide plate 40f and attached to the light guide plate 40f.
　以上説明したような導光板４０ｆにおいては、第一光源２１が発する光は、コリメートレンズ構造４５によってコリメートされた後、第一端面４３で反射されて導光板４０ｆの内部に導かれる。また、第二光源２２が発する光は、コリメートレンズ構造４６によってコリメートされた後、第二端面４４で反射されて導光板４０ｆの内部に導かれる。これにより、導光板４０ｆの発光面輝度の均一化を図ることができる。照明システム１００ａは、照明装置１０ｄに代えてこのような照明装置１０ｆを備えてもよい。 In the light guide plate 40f as described above, the light emitted by the first light source 21 is collimated by the collimating lens structure 45, then reflected by the first end surface 43 and guided to the inside of the light guide plate 40f. Further, the light emitted by the second light source 22 is collimated by the collimating lens structure 46, then reflected by the second end surface 44 and guided to the inside of the light guide plate 40f. As a result, the brightness of the light emitting surface of the light guide plate 40f can be made uniform. The lighting system 100a may include such a lighting device 10f instead of the lighting device 10d.
　［実施の形態２に係る照明装置の構成例４］
　次に、照明システム１００ａに用いられる照明装置の構成例４について説明する。図１２は、照明装置の構成例４を示す図であり、具体的には、照明装置１０ｇの断面図である。なお、照明装置１０ｇの上面図については図示が省略される。以下の構成例４の説明では、構成例２との相違点を中心に説明が行われる。 [Structure example 4 of the lighting device according to the second embodiment]
Next, a configuration example 4 of the lighting device used in the lighting system 100a will be described. FIG. 12 is a diagram showing a configuration example 4 of the lighting device, specifically, is a cross-sectional view of the lighting device 10g. The top view of the lighting device 10g is not shown. In the following description of the configuration example 4, the description will be focused on the differences from the configuration example 2.
　照明装置１０ｇは、第一光源２１と、導光板４０ｇとを備える。照明装置１０ｇは、第二光源２２を備えておらず、導光板４０ｇの第一端面４３（傾斜面）を反射面として利用することにより、第一光源２１が発する光を導光板４０ａの内部に導く。 The lighting device 10 g includes a first light source 21 and a light guide plate 40 g. The lighting device 10g does not include the second light source 22, and by using the first end surface 43 (inclined surface) of the light guide plate 40g as a reflection surface, the light emitted by the first light source 21 is inside the light guide plate 40a. Guide.
　また、導光板４０ｇが備える第二端面４４ｇは、第二主面４２側が、第一主面４１側よりも外側（Ｘ軸－側）に出っ張るように傾斜した傾斜面である。第二端面４４ｇは、第一主面４１（または第二主面４２）に対して９０°と異なる角度（例えば、４５°）をなす平面である。このような第二端面４４ｇによれば、Ｘ軸方向において隣り合う導光板４０ｇ同士を隙間の発生を抑制しつつ近づけることができる。隣り合う導光板４０ｇ同士が近づけられれば、室内空間６０から複数の照明装置１０ｇを見上げた場合に、隣り合う導光板４０ｇの境界部が暗くなってしまうことを抑制することができる。照明システム１００ａは、照明装置１０ｄに代えてこのような照明装置１０ｇを備えてもよい。 Further, the second end surface 44g included in the light guide plate 40g is an inclined surface in which the second main surface 42 side is inclined so as to protrude outward (X-axis-side) from the first main surface 41 side. The second end surface 44g is a plane forming an angle (for example, 45 °) different from 90 ° with respect to the first main surface 41 (or the second main surface 42). According to such a second end surface 44g, the light guide plates 40g adjacent to each other in the X-axis direction can be brought close to each other while suppressing the generation of a gap. If the adjacent light guide plates 40g are brought close to each other, it is possible to prevent the boundary portion of the adjacent light guide plates 40g from becoming dark when looking up at the plurality of lighting devices 10g from the indoor space 60. The lighting system 100a may include such a lighting device 10g instead of the lighting device 10d.
　なお、照明装置１０ｇにおいて、導光板４０ｇの第一主面４１のうち第一光源２１と対向する領域に、コリメートレンズ構造４５が設けられてもよい。 In the lighting device 10g, the collimating lens structure 45 may be provided in the region of the first main surface 41 of the light guide plate 40g facing the first light source 21.
　［実施の形態２に係る照明装置の構成例５］
　次に、照明システム１００ａに用いられる照明装置の構成例５について説明する。図１３は、照明装置の構成例５を示す図であり、具体的には、照明装置１０ｈの断面図である。なお、照明装置１０ｈの上面図については図示が省略される。以下の構成例５の説明では、構成例１との相違点を中心に説明が行われる。 [Structure 5 of the lighting device according to the second embodiment]
Next, a configuration example 5 of the lighting device used in the lighting system 100a will be described. FIG. 13 is a diagram showing a configuration example 5 of the lighting device, specifically, is a cross-sectional view of the lighting device 10h. The top view of the lighting device 10h is not shown. In the following description of the configuration example 5, the description will be focused on the differences from the configuration example 1.
　照明装置１０ｈは、第一光源２１と、第二光源２２と、第一導光路３１と、第二導光路３２と、導光板４０ｈとを備える。なお、照明装置１０ｈは、少なくとも第一光源２１を備えていればよく、第二光源２２を備えることは必須ではない。 The lighting device 10h includes a first light source 21, a second light source 22, a first light guide path 31, a second light guide path 32, and a light guide plate 40h. The lighting device 10h need only include at least the first light source 21, and it is not essential that the lighting device 10h includes the second light source 22.
　第一光源２１及び第二光源２２は、第一配線ダクト５１の下面（下側）に接続され、側方に向けて光を発する。第一光源２１は、具体的には、Ｘ軸－方向に向けて光を発し、第二光源２２は、Ｘ軸＋方向に向けて光を発する。なお、第一光源２１は、例えば、第一配線ダクト５１の溝に適合する取り付け構造などの接続部材によって、第一配線ダクト５１内の給電端子５１ａに電気的及び構造的に接続される。第二光源２２についても同様である。 The first light source 21 and the second light source 22 are connected to the lower surface (lower side) of the first wiring duct 51 and emit light toward the side. Specifically, the first light source 21 emits light in the X-axis-direction, and the second light source 22 emits light in the X-axis + direction. The first light source 21 is electrically and structurally connected to the power supply terminal 51a in the first wiring duct 51 by, for example, a connecting member such as a mounting structure that fits in the groove of the first wiring duct 51. The same applies to the second light source 22.
　導光板４０ｈの端部は、第一光源２１の下方、及び、第二光源２２の下方のそれぞれにまで達している。これにより、室内空間６０から照明装置１０ｈを見上げた場合に、第一光源２１及び第二光源２２が導光板４０ｈに覆われて直接視認できなくなり、導光板４０ｈを隙間なく敷き詰めることができる。照明システム１００ａは、照明装置１０ｄに代えてこのような照明装置１０ｈを備えてもよい。なお、照明システム１００（実施の形態１）において、照明装置１０ｈのような構成が採用されてもよい。 The end of the light guide plate 40h reaches below the first light source 21 and below the second light source 22, respectively. As a result, when the lighting device 10h is looked up from the indoor space 60, the first light source 21 and the second light source 22 are covered with the light guide plate 40h and cannot be directly seen, and the light guide plate 40h can be spread without a gap. The lighting system 100a may include such a lighting device 10h instead of the lighting device 10d. In the lighting system 100 (Embodiment 1), a configuration such as the lighting device 10h may be adopted.
　（実施の形態３）
　［実施の形態３に係る照明装置の構成例］
　実施の形態３に係る照明装置の具体的な構成について説明する。図１４は、実施の形態３に係る照明装置の断面図である。 (Embodiment 3)
[Structure example of the lighting device according to the third embodiment]
A specific configuration of the lighting device according to the third embodiment will be described. FIG. 14 is a cross-sectional view of the lighting device according to the third embodiment.
　なお、図１４では、２つの照明装置１０ｉが示されている。図１４に示される第一配線ダクト５１及び第二配線ダクト５２は、複数の配線ダクト５０のうちの隣り合う２つである。 Note that FIG. 14 shows two lighting devices 10i. The first wiring duct 51 and the second wiring duct 52 shown in FIG. 14 are two adjacent wiring ducts 50 among the plurality of wiring ducts 50.
　照明装置１０ｉは、第一光源２１と、第二光源２２と、第一導光路３１と、第二導光路３２と、導光板４０ｉとを備える。なお、照明装置１０ｉは、少なくとも第一光源２１を備えていればよく、第二光源２２を備えることは必須ではない。以下、照明装置１０ｉの照明装置１０との相違点について説明する。照明装置１０ｉにおいて、照明装置１０と実質的に同一の事項の説明は適宜省略される。 The lighting device 10i includes a first light source 21, a second light source 22, a first light guide path 31, a second light guide path 32, and a light guide plate 40i. The lighting device 10i need only include at least the first light source 21, and it is not essential that the lighting device 10i includes the second light source 22. Hereinafter, the differences between the lighting device 10i and the lighting device 10 will be described. In the lighting device 10i, the description of substantially the same matters as the lighting device 10 will be omitted as appropriate.
　第一光源２１及び第二光源２２は、第一配線ダクト５１の外側面（外側部）に接続され、側方に向けて光を発する。第一光源２１は、導光板４０ｉの第一端面４３に向けて光を発し、第二光源２２は、導光板４０ｉの第二端面４４に向けて光を発する。第一光源２１は、例えば、第一配線ダクト５１の溝に適合する取り付け構造などの接続部材２１ｃによって、第一配線ダクト５１内の給電端子５１ａに電気的及び構造的に接続される。第一光源２１が有する基板２１ａは、断面Ｌ字の長尺状であり、導光板４０ｉの係止構造としても機能する。第二光源２２についても同様である。 The first light source 21 and the second light source 22 are connected to the outer surface (outer portion) of the first wiring duct 51 and emit light toward the side. The first light source 21 emits light toward the first end surface 43 of the light guide plate 40i, and the second light source 22 emits light toward the second end surface 44 of the light guide plate 40i. The first light source 21 is electrically and structurally connected to the power supply terminal 51a in the first wiring duct 51 by, for example, a connecting member 21c such as a mounting structure that fits in the groove of the first wiring duct 51. The substrate 21a included in the first light source 21 has an elongated shape with an L-shaped cross section, and also functions as a locking structure for the light guide plate 40i. The same applies to the second light source 22.
　導光板４０ｉは、第一配線ダクト５１及び第二配線ダクト５２の間において、第一配線ダクト５１及び第二配線ダクト５２に橋渡しされる。これにより、室内空間６０から照明装置１０ｉを見上げた場合に、第一配線ダクト５１及び第二配線ダクト５２の間の領域のほぼ全部が発光する。照明装置１０ｉによれば、配線ダクト５０の主機能を維持したまま、天井側の広範囲が光って見えるような室内空間６０を実現することができる。 The light guide plate 40i is bridged between the first wiring duct 51 and the second wiring duct 52 to the first wiring duct 51 and the second wiring duct 52. As a result, when the lighting device 10i is looked up from the indoor space 60, almost the entire region between the first wiring duct 51 and the second wiring duct 52 emits light. According to the lighting device 10i, it is possible to realize an indoor space 60 in which a wide area on the ceiling side can be seen shining while maintaining the main function of the wiring duct 50.
　（まとめ）
　以上説明したように、照明装置１０は、間隔をあけて並走する第一配線ダクト５１及び第二配線ダクト５２のうち第一配線ダクト５１に接続され、第一配線ダクト５１から供給される電力を用いて光を発する第一光源２１と、第一配線ダクト５１及び第二配線ダクト５２に橋渡しされ、第一光源２１が発する光が入射することにより面発光する導光板４０とを備える。照明装置１０ａ～１０ｈも同様の構成を有する。 (summary)
As described above, the lighting device 10 is connected to the first wiring duct 51 of the first wiring duct 51 and the second wiring duct 52 running in parallel at intervals, and the electric power supplied from the first wiring duct 51. A first light source 21 that emits light using the above, and a light guide plate 40 that is bridged to the first wiring duct 51 and the second wiring duct 52 and emits surface light when the light emitted by the first light source 21 is incident. The lighting devices 10a to 10h also have a similar configuration.
　このような照明装置１０は、配線ダクト５０を利用して、天井側の広範囲が光って見えるような室内空間６０を実現することができる。照明装置１０は、複数の配線ダクト５０間の広い範囲を発光領域とすることができる。 Such a lighting device 10 can realize an indoor space 60 in which a wide area on the ceiling side can be seen shining by using the wiring duct 50. The lighting device 10 can have a wide range between the plurality of wiring ducts 50 as a light emitting region.
　また、例えば、導光板４０は、第一光源２１と対向する第一主面４１、及び、第一主面４１に背向する第二主面４２を有する。照明装置１０は、さらに、一方の端部が第一主面４１に接続され、他方の端部に第一光源２１が発する光が入射する第一導光路３１を備える。導光板４０ｄも同様の構成を有する。 Further, for example, the light guide plate 40 has a first main surface 41 facing the first light source 21 and a second main surface 42 facing the first main surface 41. The illuminating device 10 further includes a first light guide path 31 in which one end is connected to the first main surface 41 and the light emitted by the first light source 21 is incident on the other end. The light guide plate 40d also has a similar configuration.
　このような導光板４０は、第一導光路３１を使用して導光板４０の内部に光を導くことができる。 Such a light guide plate 40 can guide light to the inside of the light guide plate 40 by using the first light guide path 31.
　また、例えば、導光板４０ａは、第一光源２１と対向する第一主面４１、及び、第一主面４１に背向する第二主面４２を有する。導光板４０ａの第一端面４３は、第一主面４１側が、第二主面４２側よりも外側に出っ張るように傾斜し、第一光源２１が発する光は、第一端面４３で反射されて導光板４０ａの内部に導かれる。導光板４０ｂ、導光板４０ｃ、導光板４０ｅ、導光板４０ｆ、及び、導光板４０ｇも同様の構成を有する。 Further, for example, the light guide plate 40a has a first main surface 41 facing the first light source 21 and a second main surface 42 facing the first main surface 41. The first end surface 43 of the light guide plate 40a is inclined so that the first main surface 41 side protrudes outward from the second main surface 42 side, and the light emitted by the first light source 21 is reflected by the first end surface 43. It is guided to the inside of the light guide plate 40a. The light guide plate 40b, the light guide plate 40c, the light guide plate 40e, the light guide plate 40f, and the light guide plate 40g also have the same configuration.
　このような導光板４０ａは、導光路を使用せずに導光板４０ａの内部に光を導くことができる。 Such a light guide plate 40a can guide light inside the light guide plate 40a without using a light guide path.
　また、例えば、導光板４０ｂの第一主面４１のうち第一光源２１と対向する領域には、コリメートレンズ構造４５が設けられる。第一光源２１が発する光は、コリメートレンズ構造４５によってコリメートされた後、第一端面４３で反射されて導光板４０ｂの内部に導かれる。導光板４０ｆも同様の構成を有する。 Further, for example, a collimating lens structure 45 is provided in a region of the first main surface 41 of the light guide plate 40b facing the first light source 21. The light emitted by the first light source 21 is collimated by the collimating lens structure 45, then reflected by the first end surface 43 and guided to the inside of the light guide plate 40b. The light guide plate 40f also has a similar configuration.
　このような導光板４０ｂを備える照明装置１０ｂは、導光板４０ｂの発光面輝度の均一化を図ることができる。 The lighting device 10b provided with such a light guide plate 40b can make the light emitting surface brightness of the light guide plate 40b uniform.
　また、例えば、照明装置１０ａは、さらに、第二配線ダクト５２に接続され、第二配線ダクト５２から供給される電力を用いて光を発する第二光源２２を備える。導光板４０ａの、第一端面４３と反対側の第二端面４４は、第一主面４１側が、第二主面４２側よりも外側に出っ張るように傾斜する。第二光源２２が発する光は、第二端面４４で反射されて導光板４０の内部に導かれる。照明装置１０ｂ、照明装置１０ｅ、及び、照明装置１０ｆも同様の構成を有する。 Further, for example, the lighting device 10a further includes a second light source 22 that is connected to the second wiring duct 52 and emits light using the electric power supplied from the second wiring duct 52. The second end surface 44 of the light guide plate 40a, which is opposite to the first end surface 43, is inclined so that the first main surface 41 side protrudes outward from the second main surface 42 side. The light emitted by the second light source 22 is reflected by the second end surface 44 and guided to the inside of the light guide plate 40. The lighting device 10b, the lighting device 10e, and the lighting device 10f also have the same configuration.
　このような照明装置１０ａは、１つの導光板４０ａを２つの光源を用いて発光させることで、導光板４０ａの発光面輝度の均一化を図ることができる。 In such a lighting device 10a, by causing one light guide plate 40a to emit light using two light sources, it is possible to make the light emitting surface brightness of the light guide plate 40a uniform.
　また、例えば、導光板４０ｃの、第一端面４３と反対側の第二端面４４は、第二主面４２側が、第一主面４１側よりも外側に出っ張るように傾斜する。導光板４０ｇも同様の構成を有する。 Further, for example, the second end surface 44 of the light guide plate 40c opposite to the first end surface 43 is inclined so that the second main surface 42 side protrudes outward from the first main surface 41 side. The light guide plate 40 g has a similar structure.
　このような導光板４０ｃは、隣り合う導光板４０ｃに、隙間の発生を抑制しつつ近づけて配置することができる。隣り合う導光板４０ｃ同士が近づけられれば、室内空間６０から複数の照明装置１０ｃを見上げた場合に、隣り合う導光板４０ｃの境界部が暗くなってしまうことを抑制することができる。 Such a light guide plate 40c can be arranged close to the adjacent light guide plates 40c while suppressing the occurrence of a gap. If the adjacent light guide plates 40c are brought close to each other, it is possible to prevent the boundary portion of the adjacent light guide plates 40c from becoming dark when looking up at the plurality of lighting devices 10c from the indoor space 60.
　また、例えば、照明装置１０においては、第一光源２１は、第一配線ダクト５１の上面に接続され、上方に向けて光を発し、導光板４０は、第一光源２１よりも上方に位置する。照明装置１０ａ～１０ｃも同様の構成を有する。 Further, for example, in the lighting device 10, the first light source 21 is connected to the upper surface of the first wiring duct 51 and emits light upward, and the light guide plate 40 is located above the first light source 21. .. The lighting devices 10a to 10c also have a similar configuration.
　このような照明装置１０は、配線ダクト５０に機器を接続できる機能を維持したまま、天井側の広範囲が光って見えるような室内空間６０を実現することができる。 Such a lighting device 10 can realize an indoor space 60 in which a wide area on the ceiling side can be seen shining while maintaining the function of connecting equipment to the wiring duct 50.
　また、例えば、照明装置１０ｄにおいては、第一光源２１は、第一配線ダクト５１の下面に接続され、下方に向けて光を発し、導光板４０ｄは、前記第一光源よりも下方に位置する。照明装置１０ｅ～１０ｇも同様の構成を有する。 Further, for example, in the lighting device 10d, the first light source 21 is connected to the lower surface of the first wiring duct 51 and emits light downward, and the light guide plate 40d is located below the first light source. .. The lighting devices 10e to 10g also have a similar configuration.
　このような照明装置１０ｄは、配線ダクト５０によって光が遮られないため、天井側の広範囲が光って見えるような室内空間６０を容易に実現することができる。 In such a lighting device 10d, since the light is not blocked by the wiring duct 50, it is possible to easily realize an indoor space 60 in which a wide area on the ceiling side can be seen shining.
　また、例えば、照明装置１０ｉにおいては、第一光源２１は、第一配線ダクト５１の外側面に接続され、側方に向けて光を発し、導光板４０ｉは、第一配線ダクト５１及び第二配線ダクト５２の間に位置する。 Further, for example, in the lighting device 10i, the first light source 21 is connected to the outer surface of the first wiring duct 51 and emits light toward the side, and the light guide plate 40i is the first wiring duct 51 and the second. It is located between the wiring ducts 52.
　このような照明装置１０ｉは、配線ダクト５０に機器を接続できる機能を維持したまま、天井側の広範囲が光って見えるような室内空間６０を実現することができる。 Such a lighting device 10i can realize an indoor space 60 in which a wide area on the ceiling side can be seen shining while maintaining the function of connecting equipment to the wiring duct 50.
　また、例えば、照明装置１０ｈにおいては、第一光源２１は、第一配線ダクト５１の下面に接続され、側方に向けて光を発し、導光板４０ｈは、第一光源２１よりも下方に位置する。 Further, for example, in the lighting device 10h, the first light source 21 is connected to the lower surface of the first wiring duct 51 and emits light toward the side, and the light guide plate 40h is located below the first light source 21. do.
　このような照明装置１０ｈは、配線ダクト５０によって光が遮られないため、天井側の広範囲が光って見えるような室内空間６０を容易に実現することができる。 In such a lighting device 10h, since the light is not blocked by the wiring duct 50, it is possible to easily realize an indoor space 60 in which a wide area on the ceiling side can be seen shining.
　（その他の実施の形態）
　以上、実施の形態について説明したが、本発明は、上記実施の形態に限定されるものではない。 (Other embodiments)
Although the embodiments have been described above, the present invention is not limited to the above embodiments.
　例えば、上記実施の形態で説明した各照明装置において、光学部品の接触部であって光が透過する部分には、光学部品とほぼ屈折率が同一の材料（例えば、光学部品と同一の材料、または、光学グリースなど）で隙間が埋められていてもよい。これにより、光学部品の隙間に空気が介在することが抑制される。 For example, in each of the lighting devices described in the above-described embodiment, a material having substantially the same refractive index as the optical component (for example, the same material as the optical component) is formed in the contact portion of the optical component and the portion through which light is transmitted. Alternatively, the gap may be filled with optical grease or the like). This prevents air from intervening in the gaps between the optical components.
　また、上記実施の形態では、室内空間は、オフィス用途の空間として説明されたが、店舗用途の空間であってもよいし、その他の用途の空間であってもよい。 Further, in the above embodiment, the indoor space has been described as a space for office use, but it may be a space for store use or a space for other purposes.
　また、上記実施の形態において、複数の配線ダクトは、ジョイント部材を使って格子状に配置されてもよい。また、複数の配線ダクトは、天井ではなく壁に設置されてもよい。つまり、照明装置は、壁に設置されてもよい。 Further, in the above embodiment, the plurality of wiring ducts may be arranged in a grid pattern using joint members. Also, the plurality of wiring ducts may be installed on the wall instead of the ceiling. That is, the luminaire may be installed on the wall.
　また、上記実施の形態では、光源として、いわゆるＳＭＤ型の発光モジュールが用いられたが、光源の具体的態様は特に限定されない。例えば、光源として、ＣＯＢ（Ｃｈｉｐ　Ｏｎ　Ｂｏａｒｄ）型の発光モジュールが用いられてもよい。また、光源としては、有機ＥＬ素子または無機ＥＬ素子等のＬＥＤ以外の固体発光素子を含む発光モジュールが用いられてもよい。 Further, in the above embodiment, a so-called SMD type light emitting module is used as the light source, but the specific mode of the light source is not particularly limited. For example, a COB (Chip On Board) type light emitting module may be used as the light source. Further, as the light source, a light emitting module including a solid light emitting element other than the LED such as an organic EL element or an inorganic EL element may be used.
　また、本発明の全般的または具体的な態様は、システムまたは装置のいずれによって実現されてもよい。例えば、本発明は、上記実施の形態の照明システムとして実現されてもよい。また、本発明は、上記実施の形態と配線ダクトと光源とがユニット化された配線ダクトユニットとして実現されてもよい。このような配線ダクトユニットが既設されていれば、導光板を後付けすることで照明装置（照明システム）を後から容易に実現することができる。なお、配線ダクトユニットには導光路が含まれてもよい。 Further, the general or specific aspects of the present invention may be realized by either a system or an apparatus. For example, the present invention may be realized as the lighting system of the above embodiment. Further, the present invention may be realized as a wiring duct unit in which the above-described embodiment, a wiring duct, and a light source are unitized. If such a wiring duct unit is already installed, a lighting device (lighting system) can be easily realized later by retrofitting a light guide plate. The wiring duct unit may include a light guide path.
　その他、各実施の形態に対して当業者が思いつく各種変形を施して得られる形態、または、本発明の趣旨を逸脱しない範囲で各実施の形態における構成要素及び機能を任意に組み合わせることで実現される形態も本発明に含まれる。 In addition, it is realized by applying various modifications to each embodiment that can be conceived by those skilled in the art, or by arbitrarily combining the components and functions of each embodiment within the range not deviating from the gist of the present invention. Also included in the present invention.
　１０、１０ａ～１０ｉ　照明装置
　２１　第一光源
　２２　第二光源
　３１　第一導光路（導光路）
　４０、４０ａ～４０ｉ　導光板
　４１　第一主面
　４２　第二主面
　４３　第一端面
　４４、４４ｃ、４４ｇ　第二端面
　４５、４６　コリメートレンズ構造
　５１　第一配線ダクト
　５２　第二配線ダクト 10, 10a to 10i Lighting equipment 21 First light source 22 Second light source 31 First light guide path (light guide path)
40, 40a-40i Light guide plate 41 1st main surface 42 2nd main surface 43 1st end surface 44, 44c, 44g 2nd end surface 45, 46 Collimated lens structure 51 1st wiring duct 52 2nd wiring duct

Claims (10)

  1. 　間隔をあけて並走する第一配線ダクト及び第二配線ダクトのうち前記第一配線ダクトに接続され、前記第一配線ダクトから供給される電力を用いて光を発する第一光源と、
    　前記第一配線ダクト及び前記第二配線ダクトに橋渡しされ、前記第一光源が発する光が入射することにより面発光する導光板とを備える
    　照明装置。     A first light source that is connected to the first wiring duct among the first wiring duct and the second wiring duct that run in parallel at intervals and emits light using the power supplied from the first wiring duct.
    A lighting device including a light guide plate that is bridged to the first wiring duct and the second wiring duct and emits surface light when light emitted by the first light source is incident.
  2. 　前記導光板は、前記第一光源と対向する第一主面、及び、前記第一主面に背向する第二主面を有し、
    　前記照明装置は、さらに、一方の端部が前記第一主面に接続され、他方の端部に前記第一光源が発する光が入射する導光路を備える
    　請求項１に記載の照明装置。     The light guide plate has a first main surface facing the first light source and a second main surface facing the first main surface.
    The illuminating device according to claim 1, further comprising a light guide path in which one end is connected to the first main surface and the light emitted by the first light source is incident on the other end.
  3. 　前記導光板は、前記第一光源と対向する第一主面、及び、前記第一主面に背向する第二主面を有し、
    　前記導光板の第一端面は、前記第一主面側が、前記第二主面側よりも外側に出っ張るように傾斜し、
    　前記第一光源が発する光は、前記第一端面で反射されて前記導光板の内部に導かれる
    　請求項１に記載の照明装置。     The light guide plate has a first main surface facing the first light source and a second main surface facing the first main surface.
    The first end surface of the light guide plate is inclined so that the first main surface side projects outward from the second main surface side.
    The lighting device according to claim 1, wherein the light emitted by the first light source is reflected by the first end surface and guided to the inside of the light guide plate.
  4. 　前記導光板の前記第一主面のうち前記第一光源と対向する領域には、コリメートレンズ構造が設けられ、
    　前記第一光源が発する光は、前記コリメートレンズ構造によってコリメートされた後、前記第一端面で反射されて前記導光板の内部に導かれる
    　請求項３に記載の照明装置。     A collimating lens structure is provided in a region of the first main surface of the light guide plate facing the first light source.
    The lighting device according to claim 3, wherein the light emitted by the first light source is collimated by the collimating lens structure, then reflected by the first end surface and guided to the inside of the light guide plate.
  5. 　前記照明装置は、さらに、前記第二配線ダクトに接続され、前記第二配線ダクトから供給される電力を用いて光を発する第二光源を備え、
    　前記導光板の、前記第一端面と反対側の第二端面は、前記第一主面側が、前記第二主面側よりも外側に出っ張るように傾斜し、
    　前記第二光源が発する光は、前記第二端面で反射されて前記導光板の内部に導かれる
    　請求項３または４に記載の照明装置。     The lighting device further includes a second light source that is connected to the second wiring duct and emits light using the electric power supplied from the second wiring duct.
    The second end surface of the light guide plate on the side opposite to the first end surface is inclined so that the first main surface side protrudes outward from the second main surface side.
    The lighting device according to claim 3 or 4, wherein the light emitted by the second light source is reflected by the second end surface and guided to the inside of the light guide plate.
  6. 　前記導光板の、前記第一端面と反対側の第二端面は、前記第二主面側が、前記第一主面側よりも外側に出っ張るように傾斜する
    　請求項３または４に記載の照明装置。     The lighting device according to claim 3 or 4, wherein the second end surface of the light guide plate opposite to the first end surface is inclined so that the second main surface side projects outward from the first main surface side. ..
  7. 　前記第一光源は、前記第一配線ダクトの上面に接続され、上方に向けて光を発し、
    　前記導光板は、前記第一光源よりも上方に位置する
    　請求項１～６のいずれか１項に記載の照明装置。     The first light source is connected to the upper surface of the first wiring duct and emits light upward.
    The lighting device according to any one of claims 1 to 6, wherein the light guide plate is located above the first light source.
  8. 　前記第一光源は、前記第一配線ダクトの下面に接続され、下方に向けて光を発し、
    　前記導光板は、前記第一光源よりも下方に位置する
    　請求項１～６のいずれか１項に記載の照明装置。     The first light source is connected to the lower surface of the first wiring duct and emits light downward.
    The lighting device according to any one of claims 1 to 6, wherein the light guide plate is located below the first light source.
  9. 　前記第一光源は、前記第一配線ダクトの外側面に接続され、側方に向けて光を発し、
    　前記導光板は、前記第一配線ダクト及び前記第二配線ダクトの間に位置する
    　請求項１～６のいずれか１項に記載の照明装置。     The first light source is connected to the outer surface of the first wiring duct and emits light toward the side.
    The lighting device according to any one of claims 1 to 6, wherein the light guide plate is located between the first wiring duct and the second wiring duct.
  10. 　前記第一光源は、前記第一配線ダクトの下面に接続され、側方に向けて光を発し、
    　前記導光板は、前記第一光源よりも下方に位置する
    　請求項２に記載の照明装置。     The first light source is connected to the lower surface of the first wiring duct and emits light toward the side.
    The lighting device according to claim 2, wherein the light guide plate is located below the first light source.
PCT/JP2021/010378 2020-03-30 2021-03-15 Illumination device WO2021200071A1 (en)

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JP2020060843 2020-03-30

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011132350A1 (en) * 2010-04-20 2011-10-27 パナソニック株式会社 Illumination device and display device
JP2012248532A (en) * 2011-05-27 2012-12-13 Lg Innotek Co Ltd Lighting module
JP3182671U (en) * 2013-01-24 2013-04-04 施 仁傑 Light guide plate structure
JP2013101858A (en) * 2011-11-09 2013-05-23 Toshiba Corp Surface light source device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011132350A1 (en) * 2010-04-20 2011-10-27 パナソニック株式会社 Illumination device and display device
JP2012248532A (en) * 2011-05-27 2012-12-13 Lg Innotek Co Ltd Lighting module
JP2013101858A (en) * 2011-11-09 2013-05-23 Toshiba Corp Surface light source device
JP3182671U (en) * 2013-01-24 2013-04-04 施 仁傑 Light guide plate structure

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JPWO2021200071A1 (en) 2021-10-07

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