WO2018088068A1 - Resin molded article, resin molding method and lighting device - Google Patents

Resin molded article, resin molding method and lighting device Download PDF

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Publication number
WO2018088068A1
WO2018088068A1 PCT/JP2017/036069 JP2017036069W WO2018088068A1 WO 2018088068 A1 WO2018088068 A1 WO 2018088068A1 JP 2017036069 W JP2017036069 W JP 2017036069W WO 2018088068 A1 WO2018088068 A1 WO 2018088068A1
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WIPO (PCT)
Prior art keywords
resin
resin layer
translucent
layer
recesses
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PCT/JP2017/036069
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French (fr)
Japanese (ja)
Inventor
西村　和夫
展幸 宮川
Original Assignee
パナソニックＩｐマネジメント株式会社
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Publication of WO2018088068A1 publication Critical patent/WO2018088068A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/24—Feeding the material into the mould
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings

Definitions

  • the present invention relates to a resin molded product, a resin molding method, and a lighting fixture.
  • Patent Document 1 discloses a resin molded product having a large number of bubbles by discharging and cooling a resin containing a vaporizing material.
  • a large number of bubbles express a glittering feeling like glass.
  • an object of the present invention is to provide a resin molded product, a resin molding method, and an illuminator capable of controlling the bubble layout.
  • the resin molded product according to one embodiment of the present invention is a light-transmitting base material, and a light-transmitting material including a resin layer superimposed on the light-transmitting base material and having a plurality of recesses dispersed in the resin layer.
  • the resin layer is formed of a first ultraviolet curable resin.
  • a resin molding method is a translucent resin layer having a plurality of recesses by repeating discharge of an ultraviolet curable resin and irradiation of the ultraviolet curable resin with an inkjet printer. Is formed on the translucent substrate.
  • the lighting fixture which concerns on the other aspect of this invention has the translucent board which consists of the said resin molded product, and the fixture main body which hold
  • FIG. 1 is a perspective view showing a schematic configuration of a lighting apparatus according to Embodiment 1.
  • FIG. 2 is a plan view showing a schematic configuration of the light-transmitting plate according to the first embodiment.
  • FIG. 3 is an enlarged cross-sectional view showing a partial cross-sectional shape of the translucent plate according to the first embodiment.
  • FIG. 4A is a schematic diagram showing a step of the resin molding method according to Embodiment 1.
  • FIG. 4B is a schematic diagram showing one step of the resin molding method according to Embodiment 1.
  • FIG. 4C is a schematic diagram illustrating one step of the resin molding method according to Embodiment 1.
  • FIG. 4D is a schematic diagram showing one step of the resin molding method according to Embodiment 1.
  • FIG. 4A is a schematic diagram showing a step of the resin molding method according to Embodiment 1.
  • FIG. 4B is a schematic diagram showing one step of the resin molding method according to Embodiment 1.
  • FIG. 4C is
  • FIG. 5 is a cross-sectional view illustrating a schematic configuration of a light-transmitting plate according to Embodiment 2.
  • FIG. 6A is a schematic diagram showing one step of the resin molding method according to Embodiment 2.
  • FIG. 6B is a schematic diagram illustrating one step of the resin molding method according to Embodiment 2.
  • FIG. 7 is a cross-sectional view illustrating a schematic configuration of another translucent plate according to the second embodiment.
  • FIG. 8 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light transmissive plate according to the third embodiment.
  • FIG. 9 is an enlarged cross-sectional view illustrating a partial cross-sectional shape of the light-transmitting plate according to the fourth embodiment.
  • FIG. 6A is a schematic diagram showing one step of the resin molding method according to Embodiment 2.
  • FIG. 6B is a schematic diagram illustrating one step of the resin molding method according to Embodiment 2.
  • FIG. 7 is a cross-sectional
  • FIG. 10 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light-transmitting plate according to the fifth embodiment.
  • FIG. 11 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light transmissive plate according to the sixth embodiment.
  • FIG. 12A is a plan view showing a schematic configuration of a light-transmitting plate according to Embodiment 7.
  • FIG. 12B is an image diagram illustrating a shadow pattern formed by light transmitted through the light-transmitting plate in FIG. 12A.
  • FIG. 13A is a plan view illustrating a schematic configuration of another light-transmitting plate according to Embodiment 7.
  • FIG. 13B is an image diagram showing a shadow pattern formed by light transmitted through the light transmitting plate of FIG. 13A.
  • FIG. 1 is a perspective view showing a schematic configuration of a lighting apparatus according to Embodiment 1.
  • FIG. 1 is a perspective view showing a schematic configuration of a lighting apparatus according to Embodiment 1.
  • the lighting fixture 1 is, for example, a lantern-type lighting fixture, and includes a fixture body 2, a translucent plate 3, and a light source unit (not shown).
  • the light source unit include incandescent bulbs, bulb-type fluorescent lamps, and LED bulbs.
  • the instrument body 2 includes a substantially rectangular parallelepiped body portion 21 and a handle 22 attached to the upper portion of the body portion 21.
  • a light source unit is housed inside the main body unit 21.
  • a pair of slide grooves 23 extending in the vertical direction are formed at predetermined intervals in the four outer wall portions of the main body portion 21. The instrument body 2 holds the light-transmitting plate 3 by inserting the light-transmitting plate 3 from above into the pair of slide grooves 23.
  • FIG. 2 is a plan view showing a schematic configuration of the translucent plate 3 according to the first embodiment.
  • FIG. 3 is an enlarged cross-sectional view showing a partial cross-sectional shape of the translucent plate 3 according to the first embodiment.
  • the translucent plate 3 is a rectangular plate-shaped resin molded product, and includes a translucent substrate 4, a color layer 5, and a resin layer 6.
  • the translucent substrate 4 is a flat plate formed of a translucent resin such as an acrylic resin.
  • the translucent substrate 4 has a thickness in the range of, for example, 3 mm or more and 5 mm or less.
  • the color layer 5 is a colored layer that is interposed between the translucent substrate 4 and the resin layer 6 and is thinner than the resin layer 6.
  • the color layer 5 is formed on the translucent substrate 4 by discharging color ink with an ink jet printer.
  • the color layer 5 may be uniformly colored as a whole, or may be colored differently for each place.
  • the pattern may be formed.
  • the resin layer 6 is a layer formed from a translucent ultraviolet curable resin.
  • the ultraviolet curable resin may be an ultraviolet curable resin (ultraviolet curable ink) that can be discharged by an inkjet printer before curing.
  • the ultraviolet curable resin has a viscosity of 10 cP or less and a surface tension of 34 ⁇ 2 mN / m when uncured.
  • the thickness t of the resin layer 6 is, for example, in the range of 0.3 mm or more and 0.5 mm or less.
  • the resin layer 6 is formed with a plurality of concave portions 10 that are randomly dispersed in the surface direction (in-plane direction) of the resin layer 6.
  • the recess 10 expresses bubbles.
  • the recess 10 is formed in a concave curved surface shape in which the surface side (the side opposite to the color layer 5) in the resin layer 6 is open.
  • the corner 11 formed by the bottom and the side of the recess 10 has an R shape.
  • the radius of curvature of the corner portion 11 is r
  • the relationship between the thickness t of the resin layer 6 and the radius of curvature r satisfies the following formula (1).
  • the satisfaction of the expression (1) can enhance the texture of the bubbles expressed by the recess 10.
  • the corner 11 has an R shape.
  • the recessed part 10b is formed in the substantially cylindrical shape, and the peripheral part of the bottom face becomes the corner
  • the radius of curvature r of the corner 11 of the recess 10a is larger than the radius of curvature r of the recess 10b.
  • the curvature radius r of both the recessed parts 10a and 10b satisfy
  • all of the plurality of recesses 10 formed in the resin layer 6 satisfy the formula (1), but at least a majority of the plurality of recesses 10 satisfies the formula (1). It may be. Since all the concave portions 10 represent small bubbles, it is difficult to assume that the user looks at each of the concave portions and confirms the texture. In other words, if the texture of more than half of the bubbles expressed by the plurality of recesses 10 is enhanced, a high-quality bubble impression can be given to the user as a whole.
  • FIGS. 4A to 4D are schematic views showing one step of the resin molding method according to Embodiment 1.
  • FIG. It is an expanded sectional view showing typically one process of a resin molding method concerning an embodiment.
  • a color layer 5 is formed in advance on the translucent substrate 4.
  • the color layer 5 may be formed by an inkjet printer or may be formed by coating.
  • the inkjet printer 100 includes a head 110 that discharges an ultraviolet curable resin (hereinafter referred to as ink) to a sheet-like recording medium, and an ultraviolet light that is applied to the ink landed on the recording medium. And an irradiation unit 120 that cures the ink.
  • the head 110 and the irradiation unit 120 are held by a carriage (not shown), and the recording medium is scanned in the main scanning direction according to the reciprocation of the carriage.
  • the inkjet printer 100 is provided with a transport unit (not shown) that transports the recording medium in the sub-scanning direction (a direction orthogonal to the main scanning direction). By cooperating the transport unit and the carriage, the ink is stacked on the recording medium as a whole in a planar shape.
  • the resin layer 6 is formed on the translucent substrate 4 by the inkjet printer 100 using the translucent substrate 4 as a recording medium.
  • the resin layer 6 is formed by stacking six ink layers, for example, is illustrated, but the number of ink layers may be any number.
  • the ink jet printer 100 forms each layer of ink based on image data including a bubble layout. Specifically, the image data is formed by the designer designing in advance the number of bubbles, the coordinates and shape of each bubble, and the like.
  • FIG. 4A shows a case where the first ink layer 61 is formed on the color layer 5.
  • the ink jet printer 100 ejects ink from the head 110 onto the color layer 5 based on the image data, and immediately after that, the irradiation unit 120 irradiates the ink on the color layer 5 with ultraviolet rays. As a result, ink is ejected onto the color layer 5 for each scan to cure the ink.
  • FIG. 4B shows a case where the second ink layer 62 is formed on the first ink layer 61.
  • the ink jet printer 100 ejects ink from the head 110 onto the ink layer 61 based on the image data, and immediately after that, the irradiation unit 120 irradiates the ink layer 62 with ultraviolet rays.
  • the ink layer 61 of the first layer is exposed in the portion forming the recess 10 without discharging ink.
  • FIG. 4C shows five layers of ink layers 61, 62, 63, 64, 65 is formed. In this state, the inner peripheral surface forming the recess 10 is stepped.
  • a sixth ink layer 66 is formed by the inkjet printer 100 on the exposed portion of each ink layer 61, 62, 63, 64, 65.
  • the ink layer 66 is irradiated with ultraviolet rays after a certain period of time.
  • the “predetermined time” is a time longer than the time from ink ejection to ultraviolet irradiation when the ink layers 61, 62, 63, 64, 65 are formed.
  • the ink layer 66 is smoothed without being cured immediately after landing (leveling process). Therefore, as shown to FIG. 4D, the inner surface of the recessed part 10 becomes a smooth curved surface, and the corner
  • the leveling process can be executed by applying ink in addition to the ink ejection.
  • the resin molded product (translucent plate 3) is a translucent base material 4 and a resin layer 6 superimposed on the translucent base material 4. And a translucent resin layer 6 having a plurality of recesses dispersed in the surface direction of the layer 6.
  • the resin layer 6 is formed of an ultraviolet curable resin.
  • the ultraviolet curable resin is applied to the translucent substrate 4 by the ultraviolet curable inkjet printer 100. By discharging upward, the resin layer 6 can be formed. If the resin layer 6 can be formed by the inkjet printer 100, the layout of the plurality of recesses 10 forming the bubbles can be controlled.
  • a corner portion 11 formed by a bottom portion and a side portion is formed in an R shape.
  • the corner portion 11 has an R shape, the texture of bubbles formed by the recess portion 10 can be enhanced.
  • the relationship between the thickness t of the resin layer 6 and the radius of curvature r of the corner portion 11 satisfies the following formula (1).
  • the corner portion 11 can be suitably accommodated in the resin layer 6, and the three-dimensional texture of the concave portion 10 forming the bubbles can be enhanced.
  • a color layer 5 is interposed between the translucent substrate 4 and the resin layer 6.
  • the color tone of the translucent plate 3 is controlled by adjusting the color tone of the color layer 5. be able to.
  • the color layer 5 is arrange
  • the resin molding method according to the present embodiment repeats the discharge of the ultraviolet curable resin and the ultraviolet irradiation to the discharged ultraviolet curable resin by the inkjet printer 100, thereby translucent having a plurality of recesses 10.
  • the resin layer 6 is formed on the translucent substrate 4.
  • the resin layer 6 is formed by discharging the ultraviolet curable resin onto the translucent substrate 4 by the ink jet printer 100, the layout of the plurality of recesses 10 forming the bubbles is controlled. be able to.
  • the lighting fixture 1 which concerns on embodiment has the translucent board 3 which consists of said resin molding goods, and the instrument main body 2 which hold
  • FIG. 5 is a cross-sectional view showing a schematic configuration of a light transmitting plate 3A according to the second embodiment. As shown in FIG. 5, in the translucent plate 3A, the translucent substrate 4a and the resin layer 6a are curved. Although the color layer is not shown in FIG. 5, a color layer may be provided between the translucent substrate 4a and the resin layer 6a.
  • the translucent substrate 4a and the resin layer 6a are curved in a semicircular shape when viewed in cross section. And the resin layer 6a is overlaid with respect to the outer peripheral surface of the translucent base material 4a. The resin layer 6a is overlaid on the outer peripheral surface of the translucent substrate 4a so that the plurality of recesses 10 are opened on the translucent substrate 4a side.
  • FIG. 6A and 6B are schematic views showing one step of the resin molding method according to Embodiment 2.
  • FIG. 6A and 6B are schematic views showing one step of the resin molding method according to Embodiment 2.
  • a resin layer 6a is formed on a non-adhesive substrate 200 by an ultraviolet curing ink jet printer 100.
  • the resin layer 6 a is formed in a film shape having a plurality of recesses 10. Then, the resin layer 6a is peeled from the base material 200, and the resin layer 6a is affixed to the outer peripheral surface of the curved translucent base material 4a as shown in FIG. 6B. At this time, the resin layer 6a is disposed on the outer peripheral surface of the translucent substrate 4a so that the plurality of recesses 10 are opened on the translucent substrate 4a side. Thereby, the translucent plate 3A shown in FIG. 5 is molded.
  • the translucent substrate 4a and the resin layer 6a are curved.
  • the resin layer 6a is peeled from the base material 200, and the light-transmitting base material which curved Paste on 4a.
  • the resin layer 6a having the plurality of recesses 10 is superimposed on the curved plate-shaped translucent substrate 4a, the recesses are also formed on the curved plate-shaped translucent plate 3A.
  • the texture of bubbles formed by 10 can be enhanced.
  • the concave portion 10 forms a closed space by the translucent substrate 4a, it can be expressed more like a bubble.
  • FIG. 7 is a cross-sectional view showing a schematic configuration of another translucent plate 3a according to the second embodiment.
  • the resin layer 6a of the translucent plate 3a may be overlaid on the inner peripheral surface of the translucent substrate 4a.
  • the resin layer 6a is overlaid on the inner peripheral surface of the translucent substrate 4a so that the plurality of recesses 10 are opened on the translucent substrate 4a side.
  • the concave portion 10 is filled with an ultraviolet curable resin (second ultraviolet curable resin) having a refractive index different from that of the ultraviolet curable resin (first ultraviolet curable resin) forming the resin layer 6.
  • an ultraviolet curable resin second ultraviolet curable resin
  • first ultraviolet curable resin first ultraviolet curable resin
  • FIG. 8 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light-transmitting plate 3B according to the third embodiment. Specifically, FIG. 8 corresponds to FIG.
  • a plurality of recesses 10 are filled with a filler 12 made of a second ultraviolet curable resin.
  • the filler 12 and the resin layer 6 are flush with each other.
  • the second ultraviolet curable resin may be an ultraviolet curable resin (ultraviolet curable ink) that can be discharged by an ink jet printer before curing.
  • the second ultraviolet curable resin has a viscosity of 10 cP or less and a surface tension of 34 ⁇ 2 mN / m when uncured. That is, the filler 12 is also formed by the ink jet printer 100.
  • the resin layer 6 and the filler 12 may be formed during the same scanning in the inkjet printer 100, or after the entire recess 10 is formed, a second UV curable resin (UV curing) is formed in the recess 10.
  • the filler 12 may be formed by discharging and curing the ink.
  • the recess 10 is filled with the second ultraviolet curable resin having a refractive index different from that of the first ultraviolet curable resin.
  • the surface of the translucent plate 3B can be smoothed. Therefore, dust or dust does not collect in the recess 10. Moreover, since the surface of the translucent plate 3B is smoothed, the cleaning property is also improved.
  • the second ultraviolet curable resin has a refractive index different from that of the first ultraviolet curable resin forming the resin layer 6, even if the concave portion 10 is filled with the filler 12, the inside of the concave portion 10 has air bubbles.
  • the some recessed part 10 will emit the glitter which changes with the presence or absence of the filler 12, and can improve the designability.
  • Embodiment 4 In the said Embodiment 1, 2, the case where the recessed part 10 was open
  • FIG. 9 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light-transmitting plate 3C according to the fourth embodiment. Specifically, FIG. 9 corresponds to FIG.
  • a plurality of recesses 10c are buried in the resin layer 6c as a whole, forming a closed space.
  • the closed space formed by the recess 10c is filled with a filler 12c made of a second ultraviolet curable resin.
  • the filler 12c may be formed by the ink jet printer 100.
  • the first ultraviolet curable resin is applied so that the plurality of three-dimensional objects are buried. 4 may be applied. In this case, the three-dimensional object becomes the filler 12c.
  • the recess 10 forms a closed space, and the second ultraviolet curable resin is filled in the closed space.
  • the filling material 12c made of the second ultraviolet curable resin is filled in the recessed portion 10c which is a closed space, the three-dimensional texture of bubbles formed by the recessed portion 10c can be enhanced.
  • Embodiment 5 In the said Embodiment 4, the case where the several recessed part 10c was formed on the same plane was illustrated and demonstrated. In the fifth embodiment, a case where a plurality of recesses 10d are dispersed also in the thickness direction of the resin layer 6d will be described as an example.
  • FIG. 10 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light-transmitting plate 3D according to the fifth embodiment. Specifically, FIG. 10 corresponds to FIG.
  • the plurality of recesses 10d are also distributed in the thickness direction of the resin layer 6d, and each recess 10d is filled with a filler 12d. According to this configuration, since the layout of the plurality of recesses 10d in the thickness direction can also be controlled, more various design properties can be exhibited.
  • Embodiment 6 In the said Embodiment 1, the case where the surface of the recessed part 10 was exposed was illustrated and demonstrated. In the sixth embodiment, a case where a coat layer is laminated on the surface of the recess 10 will be described as an example.
  • FIG. 11 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light-transmitting plate 3E according to the sixth embodiment. Specifically, FIG. 11 corresponds to FIG. As shown in FIG. 11, a coat layer 15 is formed on the surface of the concave portion 10 of the translucent plate 3E. Examples of the material for forming the coat layer 15 include antifouling materials such as fluorine. The coat layer 15 may be formed of the same material as the ink layer.
  • the recess 10 since the recess 10 is covered with the coat layer 15, it is possible to suppress the recess 10 from being contaminated.
  • the coat layer 15 may be formed continuously from the surface of the recess 10 to the other surface of the resin layer 6e. In this case, dirt on the other surface of the resin layer 6e can also be suppressed.
  • each shape of the plurality of recesses 10f and the layout of the plurality of recesses 10f can be controlled. That is, each shape of the plurality of recesses 10f and the layout of the plurality of recesses 10f can be formed with a predetermined regularity.
  • predetermined regularity in each shape of the plurality of recesses 10f means that each shape of the plurality of recesses 10f is determined with regularity. For example, the case where the shape of each of the plurality of recesses 10f is the same or similar, or the case where the shape of each of the plurality of recesses 10f is different in a certain pattern is included.
  • predetermined regularity in the layout of the plurality of recesses 10f means that the layout of the plurality of recesses 10f is determined with regularity. For example, a case where a plurality of recesses 10f are arranged in a certain pattern, a case where the plurality of recesses 10f are arranged uniformly as a whole, a case where the plurality of recesses 10f are arranged so as to express a specific symbol, and the like are included. .
  • FIG. 12A is a plan view showing a schematic configuration of a translucent plate 3F according to Embodiment 7.
  • FIG. 12A corresponds to FIG.
  • FIG. 12B is an image diagram showing a shadow pattern formed by light transmitted through the translucent plate 3F of FIG. 12A.
  • the translucent plate 3F has a plurality of concave portions 10f having the same shape in plan view arranged in a matrix. Specifically, the recess 10f has an elliptical shape in plan view.
  • a plurality of line-shaped shadow patterns P1 as shown in FIG. 12B are formed.
  • FIG. 13A is a plan view showing a schematic configuration of another translucent plate 3G according to Embodiment 7.
  • FIG. FIG. 13B is an image diagram showing a shadow pattern formed by light transmitted through the light transmitting plate 3G of FIG. 13A. Specifically, FIG. 13A corresponds to FIG. 12A, and FIG. 13B corresponds to FIG. 12B.
  • the translucent plate 3F has a plurality of concavities 10g having an elliptical shape in plan view arranged concentrically. Moreover, the size of the plurality of recesses 10g decreases as it goes inside the concentric circles. The plurality of recesses 10g formed on the same circle have the same plan view shape.
  • a plurality of circular shadow patterns P2 as shown in FIG. 13B are formed.
  • the design of the bubbles formed by the plurality of recesses 10f and 10g is improved. Can be increased. Furthermore, if the design property of the bubble can be improved, the design property of the shadow formed by the light transmitted through the light transmitting plates 3F and 3G can be improved.
  • the translucent plate 3 has the color layer 5 has been described as an example.
  • the color layer 5 is not provided, and the resin layer is directly formed on the translucent substrate 4. 6 may be formed.
  • the translucent plate 3 has a rectangular plate shape
  • the translucent plate 3 may have any shape.
  • examples of other shapes include polygonal shapes other than rectangles, circular shapes, and elliptical shapes.
  • the above embodiment has been described by exemplifying the case where the corner portion 11 of the concave portion 10 has an R shape.
  • the corner may be stepped. Even in this case, the texture of the bubbles can be enhanced.
  • angular part of a recessed part into a step shape what is necessary is not to perform the leveling process mentioned above.
  • angular part of a recessed part is step shape, the approximate curve of each intersection of the said step shape may be calculated

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

This resin molded article (a light-transmitting plate (3)) is provided with: a light-transmitting substrate (4); and a light-transmitting resin layer (6) which is superposed on the light-transmitting substrate (4) and has a plurality of recesses (10) that are arranged in a dispersed manner. The resin layer (6) is formed from a first ultraviolet curable resin.

Description

樹脂成型品、樹脂成型方法及び照明器具Resin molded product, resin molding method and lighting apparatus
　本発明は、樹脂成型品、樹脂成型方法及び照明器具に関する。 The present invention relates to a resin molded product, a resin molding method, and a lighting fixture.
　例えば、特許文献１には、気化材を含む樹脂を吐出して、冷却することにより、多数の気泡を有した樹脂成形品が開示されている。この樹脂成形品では、多数の気泡がガラスのようなきらめき感を表現している。 For example, Patent Document 1 discloses a resin molded product having a large number of bubbles by discharging and cooling a resin containing a vaporizing material. In this resin molded product, a large number of bubbles express a glittering feeling like glass.
特開平１０－１００１７３号公報Japanese Patent Laid-Open No. 10-1001000
　ところで、特許文献１では、気泡のレイアウトは、樹脂吐出時の気化材の位置に依存するために、意図した気泡のレイアウトで樹脂成形品を成型することができないのが実状である。 By the way, in Patent Document 1, since the bubble layout depends on the position of the vaporized material at the time of resin discharge, the actual condition is that a resin molded product cannot be molded with the intended bubble layout.
　このため、本発明の目的は、気泡のレイアウトを制御可能な樹脂成型品、樹脂成型方法及び照明器を提供することである。 Therefore, an object of the present invention is to provide a resin molded product, a resin molding method, and an illuminator capable of controlling the bubble layout.
　本発明の一態様に係る樹脂成形品は、透光性基材と、透光性基材上に重畳された樹脂層であって、当該樹脂層に分散された複数の凹部を有する透光性の樹脂層とを備え、樹脂層は、第一の紫外線硬化樹脂により形成されている。 The resin molded product according to one embodiment of the present invention is a light-transmitting base material, and a light-transmitting material including a resin layer superimposed on the light-transmitting base material and having a plurality of recesses dispersed in the resin layer. The resin layer is formed of a first ultraviolet curable resin.
　本発明の他態様に係る樹脂成型方法は、インクジェットプリンタで紫外線硬化樹脂の吐出と、当該吐出された紫外線硬化樹脂への紫外線照射とを繰り返すことで、複数の凹部を有する透光性の樹脂層を透光性基材上に形成する。 A resin molding method according to another aspect of the present invention is a translucent resin layer having a plurality of recesses by repeating discharge of an ultraviolet curable resin and irradiation of the ultraviolet curable resin with an inkjet printer. Is formed on the translucent substrate.
　本発明の他態様に係る照明器具は、上記樹脂成型品からなる透光板と、透光板を保持する器具本体とを有する。 The lighting fixture which concerns on the other aspect of this invention has the translucent board which consists of the said resin molded product, and the fixture main body which hold | maintains a translucent plate.
　本発明によれば、気泡のレイアウトを制御可能な樹脂成型品、樹脂成型方法及び照明器を提供することができる。 According to the present invention, it is possible to provide a resin molded product, a resin molding method, and an illuminator capable of controlling the bubble layout.
図１は、実施の形態１に係る照明器具の概略構成を示す斜視図である。FIG. 1 is a perspective view showing a schematic configuration of a lighting apparatus according to Embodiment 1. FIG. 図２は、実施の形態１に係る透光板の概略構成を示す平面図である。FIG. 2 is a plan view showing a schematic configuration of the light-transmitting plate according to the first embodiment. 図３は、実施の形態１に係る透光板の部分的な断面形状を拡大して示す断面図である。FIG. 3 is an enlarged cross-sectional view showing a partial cross-sectional shape of the translucent plate according to the first embodiment. 図４Ａは、実施の形態１に係る樹脂成型方法の一工程を示す模式図である。FIG. 4A is a schematic diagram showing a step of the resin molding method according to Embodiment 1. 図４Ｂは、実施の形態１に係る樹脂成型方法の一工程を示す模式図である。FIG. 4B is a schematic diagram showing one step of the resin molding method according to Embodiment 1. 図４Ｃは、実施の形態１に係る樹脂成型方法の一工程を示す模式図である。FIG. 4C is a schematic diagram illustrating one step of the resin molding method according to Embodiment 1. 図４Ｄは、実施の形態１に係る樹脂成型方法の一工程を示す模式図である。FIG. 4D is a schematic diagram showing one step of the resin molding method according to Embodiment 1. 図５は、実施の形態２に係る透光板の概略構成を示す断面図である。FIG. 5 is a cross-sectional view illustrating a schematic configuration of a light-transmitting plate according to Embodiment 2. 図６Ａは、実施の形態２に係る樹脂成型方法の一工程を示す模式図である。FIG. 6A is a schematic diagram showing one step of the resin molding method according to Embodiment 2. 図６Ｂは、実施の形態２に係る樹脂成型方法の一工程を示す模式図である。FIG. 6B is a schematic diagram illustrating one step of the resin molding method according to Embodiment 2. 図７は、実施の形態２に係る他の透光板の概略構成を示す断面図である。FIG. 7 is a cross-sectional view illustrating a schematic configuration of another translucent plate according to the second embodiment. 図８は、実施の形態３に係る透光板の部分的な断面形状を拡大して示す断面図である。FIG. 8 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light transmissive plate according to the third embodiment. 図９は、実施の形態４に係る透光板の部分的な断面形状を拡大して示す断面図である。FIG. 9 is an enlarged cross-sectional view illustrating a partial cross-sectional shape of the light-transmitting plate according to the fourth embodiment. 図１０は、実施の形態５に係る透光板の部分的な断面形状を拡大して示す断面図である。FIG. 10 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light-transmitting plate according to the fifth embodiment. 図１１は、実施の形態６に係る透光板の部分的な断面形状を拡大して示す断面図である。FIG. 11 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light transmissive plate according to the sixth embodiment. 図１２Ａは、実施の形態７に係る透光板の概略構成を示す平面図である。FIG. 12A is a plan view showing a schematic configuration of a light-transmitting plate according to Embodiment 7. FIG. 図１２Ｂは、図１２Ａの透光板を透過した光がなす陰影パターンを示すイメージ図である。FIG. 12B is an image diagram illustrating a shadow pattern formed by light transmitted through the light-transmitting plate in FIG. 12A. 図１３Ａは、実施の形態７に係る他の透光板の概略構成を示す平面図である。FIG. 13A is a plan view illustrating a schematic configuration of another light-transmitting plate according to Embodiment 7. FIG. 図１３Ｂは、図１３Ａの透光板を透過した光がなす陰影パターンを示すイメージ図である。FIG. 13B is an image diagram showing a shadow pattern formed by light transmitted through the light transmitting plate of FIG. 13A.
　（実施の形態１）
　以下、実施の形態について、図面を参照しながら具体的に説明する。なお、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および接続形態などは、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。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。 (Embodiment 1)
Hereinafter, embodiments will be specifically described with reference to the drawings. It should be noted that each of the embodiments described below shows a comprehensive or specific example. Numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of the constituent elements, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept are described as optional constituent elements. Each figure is a mimetic diagram and is not necessarily illustrated strictly.
　［全体構成］
　以下、実施の形態１に係る照明器具について説明する。 [overall structure]
Hereinafter, the lighting apparatus according to Embodiment 1 will be described.
　図１は、実施の形態１に係る照明器具の概略構成を示す斜視図である。 FIG. 1 is a perspective view showing a schematic configuration of a lighting apparatus according to Embodiment 1. FIG.
　図１に示すように、照明器具１は、例えばランタン型の照明器具であり、器具本体２と、透光板３と、図示しない光源部とを備えている。光源部としては、例えば白熱電球、電球型蛍光灯またはＬＥＤ電球などが挙げられる。 As shown in FIG. 1, the lighting fixture 1 is, for example, a lantern-type lighting fixture, and includes a fixture body 2, a translucent plate 3, and a light source unit (not shown). Examples of the light source unit include incandescent bulbs, bulb-type fluorescent lamps, and LED bulbs.
　器具本体２は、略直方体状の本体部２１と、本体部２１の上部に取り付けられた取っ手２２とを備えている。本体部２１の内部には光源部が収容されている。また、本体部２１の４つの外壁部には、それぞれ所定の間隔を空けて上下方向に延在する一対のスライド溝２３が形成されている。この一対のスライド溝２３に対して、透光板３が上方から差し込まれることで、器具本体２が透光板３を保持している。 The instrument body 2 includes a substantially rectangular parallelepiped body portion 21 and a handle 22 attached to the upper portion of the body portion 21. A light source unit is housed inside the main body unit 21. In addition, a pair of slide grooves 23 extending in the vertical direction are formed at predetermined intervals in the four outer wall portions of the main body portion 21. The instrument body 2 holds the light-transmitting plate 3 by inserting the light-transmitting plate 3 from above into the pair of slide grooves 23.
　図２は、実施の形態１に係る透光板３の概略構成を示す平面図である。図３は、実施の形態１に係る透光板３の部分的な断面形状を拡大して示す断面図である。 FIG. 2 is a plan view showing a schematic configuration of the translucent plate 3 according to the first embodiment. FIG. 3 is an enlarged cross-sectional view showing a partial cross-sectional shape of the translucent plate 3 according to the first embodiment.
　図２及び図３に示すように、透光板３は、矩形板状の樹脂成型品であり、透光性基材４と、カラー層５と、樹脂層６とを備えている。 2 and 3, the translucent plate 3 is a rectangular plate-shaped resin molded product, and includes a translucent substrate 4, a color layer 5, and a resin layer 6.
　透光性基材４は、例えばアクリル樹脂などの透光性を有する樹脂から形成された平板である。透光性基材４の厚みは、例えば３ｍｍ以上、５ｍｍ以下の範囲に収められている。カラー層５は、透光性基材４と樹脂層６との間に介在しており、樹脂層６よりも薄い、着色された層である。具体的には、カラー層５は、透光性基材４上に、インクジェットプリンタにてカラーインクを吐出することで形成されている。カラー層５は、全体として均一に着色されていてもよいし、場所ごとに異なるように着色されていてもよい。また、柄が形成されていてもよい。 The translucent substrate 4 is a flat plate formed of a translucent resin such as an acrylic resin. The translucent substrate 4 has a thickness in the range of, for example, 3 mm or more and 5 mm or less. The color layer 5 is a colored layer that is interposed between the translucent substrate 4 and the resin layer 6 and is thinner than the resin layer 6. Specifically, the color layer 5 is formed on the translucent substrate 4 by discharging color ink with an ink jet printer. The color layer 5 may be uniformly colored as a whole, or may be colored differently for each place. Moreover, the pattern may be formed.
　樹脂層６は、透光性を有する紫外線硬化樹脂から形成された層である。ここで、紫外線硬化樹脂は、硬化前においてインクジェットプリンタにて吐出可能な紫外線硬化樹脂（紫外線硬化インク）であればよい。具体的には、紫外線硬化樹脂は、未硬化時において粘度が１０ｃＰ以下、表面張力が３４±２ｍＮ／ｍを満たしている。樹脂層６の厚みｔは、例えば０．３ｍｍ以上、０．５ｍｍ以下の範囲に収められている。また、樹脂層６には、当該樹脂層６の面方向（面内方向）にランダムに分散された複数の凹部１０が形成されている。この凹部１０が気泡を表現している。 The resin layer 6 is a layer formed from a translucent ultraviolet curable resin. Here, the ultraviolet curable resin may be an ultraviolet curable resin (ultraviolet curable ink) that can be discharged by an inkjet printer before curing. Specifically, the ultraviolet curable resin has a viscosity of 10 cP or less and a surface tension of 34 ± 2 mN / m when uncured. The thickness t of the resin layer 6 is, for example, in the range of 0.3 mm or more and 0.5 mm or less. The resin layer 6 is formed with a plurality of concave portions 10 that are randomly dispersed in the surface direction (in-plane direction) of the resin layer 6. The recess 10 expresses bubbles.
　具体的には、凹部１０は、樹脂層６における表面側（カラー層５とは反対側）が開放した凹曲面形状に形成されている。この凹部１０の底部と側部とがなす角部１１は、Ｒ形状となっている。この角部１１の曲率半径をｒとすると、樹脂層６の厚みｔと、曲率半径ｒとの関係は、以下の式（１）を満たす。 Specifically, the recess 10 is formed in a concave curved surface shape in which the surface side (the side opposite to the color layer 5) in the resin layer 6 is open. The corner 11 formed by the bottom and the side of the recess 10 has an R shape. When the radius of curvature of the corner portion 11 is r, the relationship between the thickness t of the resin layer 6 and the radius of curvature r satisfies the following formula (1).
　ｒ≦ｔ≦２ｒ・・・（１） R ≦ t ≦ 2r (1)
　この式（１）が満たされていることで、凹部１０が表現する気泡の質感を高めることができる。そして、具体的には、図３で示す凹部１０ａは半球状に形成されているため、角部１１がＲ形状となっている。また、凹部１０ｂは略円柱状に形成されており、その底面の周縁部がＲ形状の角部１１となっている。このため、凹部１０ａの角部１１の曲率半径ｒの方が、凹部１０ｂの曲率半径ｒよりも大きい。そして、凹部１０ａ、１０ｂの両者の曲率半径ｒは上記の式（１）の関係を満たしている。ここで、樹脂層６内に形成された複数の凹部１０の全てが、式（１）を満たしていることが望まれるが、少なくとも複数の凹部１０のうち、過半数以上が式（１）を満たしていてもよい。凹部１０はいずれも小さな泡を表現しているため、ユーザーが、その一つ一つを注視して質感を確認することは想定しにくい。つまり、複数の凹部１０が表現する半数以上の気泡の質感を高めていれば、全体として高質な気泡の印象をユーザーに与えることができる。 The satisfaction of the expression (1) can enhance the texture of the bubbles expressed by the recess 10. Specifically, since the recess 10a shown in FIG. 3 is formed in a hemispherical shape, the corner 11 has an R shape. Moreover, the recessed part 10b is formed in the substantially cylindrical shape, and the peripheral part of the bottom face becomes the corner | angular part 11 of R shape. For this reason, the radius of curvature r of the corner 11 of the recess 10a is larger than the radius of curvature r of the recess 10b. And the curvature radius r of both the recessed parts 10a and 10b satisfy | fills the relationship of said Formula (1). Here, it is desirable that all of the plurality of recesses 10 formed in the resin layer 6 satisfy the formula (1), but at least a majority of the plurality of recesses 10 satisfies the formula (1). It may be. Since all the concave portions 10 represent small bubbles, it is difficult to assume that the user looks at each of the concave portions and confirms the texture. In other words, if the texture of more than half of the bubbles expressed by the plurality of recesses 10 is enhanced, a high-quality bubble impression can be given to the user as a whole.
　［樹脂成型方法］
　次に、実施の形態１に係る樹脂成型品としての透光板３の樹脂成型方法について、図４Ａ～図４Ｄに基づいて説明する。図４Ａ～図４Ｄは、実施の形態１に係る樹脂成型方法の一工程を示す模式図である。実施の形態に係る樹脂成型方法の一工程を模式的に示す拡大断面図である。 [Resin molding method]
Next, a resin molding method of the translucent plate 3 as a resin molded product according to Embodiment 1 will be described based on FIGS. 4A to 4D. 4A to 4D are schematic views showing one step of the resin molding method according to Embodiment 1. FIG. It is an expanded sectional view showing typically one process of a resin molding method concerning an embodiment.
　なお、透光性基材４に対しては、予めカラー層５が形成されている。カラー層５は、インクジェットプリンタで形成されていてもよいし、塗布により形成されていてもよい。 Note that a color layer 5 is formed in advance on the translucent substrate 4. The color layer 5 may be formed by an inkjet printer or may be formed by coating.
　実施の形態に係る樹脂成型方法では、紫外線硬化型のインクジェットプリンタが用いられる。図４Ａに示すように、インクジェットプリンタ１００には、シート状の記録媒体に対して紫外線硬化樹脂（以下、インクと称す。）を吐出するヘッド１１０と、記録媒体上に着弾したインクに対して紫外線を照射して、当該インクを硬化させる照射部１２０とが設けられている。ヘッド１１０と、照射部１２０とは、図示しないキャリッジによって保持されており、このキャリッジの往復動作に応じて、記録媒体上を主走査方向に走査するようになっている。また、インクジェットプリンタ１００には、記録媒体を副走査方向（主走査方向に直交する方向）に搬送する搬送部（図示省略）が設けられている。搬送部とキャリッジとが協働することにより、インクを記録媒体上に全体として面状に積層するようになっている。 In the resin molding method according to the embodiment, an ultraviolet curable ink jet printer is used. As shown in FIG. 4A, the inkjet printer 100 includes a head 110 that discharges an ultraviolet curable resin (hereinafter referred to as ink) to a sheet-like recording medium, and an ultraviolet light that is applied to the ink landed on the recording medium. And an irradiation unit 120 that cures the ink. The head 110 and the irradiation unit 120 are held by a carriage (not shown), and the recording medium is scanned in the main scanning direction according to the reciprocation of the carriage. Further, the inkjet printer 100 is provided with a transport unit (not shown) that transports the recording medium in the sub-scanning direction (a direction orthogonal to the main scanning direction). By cooperating the transport unit and the carriage, the ink is stacked on the recording medium as a whole in a planar shape.
　そして、記録媒体として透光性基材４を用いて、インクジェットプリンタ１００で透光性基材４上に樹脂層６を形成する。ここでは、インク層を例えば六層重ねることで、樹脂層６が形成される場合を例示するが、インクの積層数は如何様でもよい。また、インクジェットプリンタ１００は、気泡のレイアウトを含んだ画像データに基づいて、インクの各層を形成する。具体的には、画像データは、気泡の個数、各気泡の座標及び形状などを設計者が予めデザインして、形成されたものである。 Then, the resin layer 6 is formed on the translucent substrate 4 by the inkjet printer 100 using the translucent substrate 4 as a recording medium. Here, a case where the resin layer 6 is formed by stacking six ink layers, for example, is illustrated, but the number of ink layers may be any number. The ink jet printer 100 forms each layer of ink based on image data including a bubble layout. Specifically, the image data is formed by the designer designing in advance the number of bubbles, the coordinates and shape of each bubble, and the like.
　図４Ａは、カラー層５上に一層目のインク層６１が形成される場合を示している。図４Ａに示すように、インクジェットプリンタ１００は、画像データに基づいて、ヘッド１１０からカラー層５上にインクを吐出し、その直後にカラー層５上のインクに照射部１２０で紫外線を照射する。これにより、一走査毎にカラー層５上にインクを吐出して当該インクを硬化させている。 FIG. 4A shows a case where the first ink layer 61 is formed on the color layer 5. As shown in FIG. 4A, the ink jet printer 100 ejects ink from the head 110 onto the color layer 5 based on the image data, and immediately after that, the irradiation unit 120 irradiates the ink on the color layer 5 with ultraviolet rays. As a result, ink is ejected onto the color layer 5 for each scan to cure the ink.
　図４Ｂは、一層目のインク層６１に二層目のインク層６２が形成される場合を示している。図４Ｂに示すように、インクジェットプリンタ１００は、画像データに基づいて、ヘッド１１０からインク層６１上にインクを吐出し、その直後にインク層６２に照射部１２０で紫外線を照射する。このとき、凹部１０をなす部分は、インクの吐出が行われずに、一層目のインク層６１が露出している。そして、同様の工程を、三層目、四層目、五層目と繰り返すことで、図４Ｃに示すように透光性基材４上に五層のインク層６１、６２、６３、６４、６５が形成される。この状態では、凹部１０をなす内周面は、段差状となっている。 FIG. 4B shows a case where the second ink layer 62 is formed on the first ink layer 61. As shown in FIG. 4B, the ink jet printer 100 ejects ink from the head 110 onto the ink layer 61 based on the image data, and immediately after that, the irradiation unit 120 irradiates the ink layer 62 with ultraviolet rays. At this time, the ink layer 61 of the first layer is exposed in the portion forming the recess 10 without discharging ink. Then, by repeating the same process for the third layer, the fourth layer, and the fifth layer, as shown in FIG. 4C, five layers of ink layers 61, 62, 63, 64, 65 is formed. In this state, the inner peripheral surface forming the recess 10 is stepped.
　その後、各インク層６１、６２、６３、６４、６５のうち、露出した部分に対して、六層目のインク層６６を、インクジェットプリンタ１００により形成する。このインク層６６に対する紫外線の照射は、一定の時間をおいてから実行される。「所定の時間」とは、インク層６１、６２、６３、６４、６５の形成時におけるインク吐出から紫外線照射までの時間よりも長い時間である。これにより、インク層６６では、インクが着弾後すぐに硬化せずに、平滑化されることになる（レベリング処理）。したがって図４Ｄに示すように、凹部１０の内面が滑らかな曲面となって、角部１１がＲ形状となる。なお、レベリング処理は、インクの吐出以外にも、インクを塗布することで実行することも可能である。 Thereafter, a sixth ink layer 66 is formed by the inkjet printer 100 on the exposed portion of each ink layer 61, 62, 63, 64, 65. The ink layer 66 is irradiated with ultraviolet rays after a certain period of time. The “predetermined time” is a time longer than the time from ink ejection to ultraviolet irradiation when the ink layers 61, 62, 63, 64, 65 are formed. As a result, the ink layer 66 is smoothed without being cured immediately after landing (leveling process). Therefore, as shown to FIG. 4D, the inner surface of the recessed part 10 becomes a smooth curved surface, and the corner | angular part 11 becomes R shape. The leveling process can be executed by applying ink in addition to the ink ejection.
　［効果など］
　以上のように、本実施の形態に係る樹脂成型品（透光板３）は、透光性基材４と、透光性基材４上に重畳された樹脂層６であって、当該樹脂層６の面方向に分散された複数の凹部を有する透光性の樹脂層６とを備えている。樹脂層６は、紫外線硬化樹脂により形成されている。 [Effects, etc.]
As described above, the resin molded product (translucent plate 3) according to the present embodiment is a translucent base material 4 and a resin layer 6 superimposed on the translucent base material 4. And a translucent resin layer 6 having a plurality of recesses dispersed in the surface direction of the layer 6. The resin layer 6 is formed of an ultraviolet curable resin.
　この構成によれば、紫外線硬化樹脂により形成された樹脂層６が透光性基材４上に形成されているので、紫外線硬化型のインクジェットプリンタ１００によって、紫外線硬化樹脂を透光性基材４上に吐出することで、樹脂層６を形成することができる。インクジェットプリンタ１００で樹脂層６を形成できるのであれば、気泡をなす複数の凹部１０のレイアウトを制御することができる。 According to this configuration, since the resin layer 6 formed of the ultraviolet curable resin is formed on the translucent substrate 4, the ultraviolet curable resin is applied to the translucent substrate 4 by the ultraviolet curable inkjet printer 100. By discharging upward, the resin layer 6 can be formed. If the resin layer 6 can be formed by the inkjet printer 100, the layout of the plurality of recesses 10 forming the bubbles can be controlled.
　また、凹部１０は、底部と側部とがなす角部１１がＲ形状に形成されている。 Further, in the concave portion 10, a corner portion 11 formed by a bottom portion and a side portion is formed in an R shape.
　この構成によれば、角部１１がＲ形状であるので、凹部１０がなす気泡の質感を高めることができる。 According to this configuration, since the corner portion 11 has an R shape, the texture of bubbles formed by the recess portion 10 can be enhanced.
　また、樹脂層６の厚みｔと、角部１１の曲率半径ｒとの関係は以下の式（１）を満たす。 Further, the relationship between the thickness t of the resin layer 6 and the radius of curvature r of the corner portion 11 satisfies the following formula (1).
　ｒ≦ｔ≦２ｒ・・・（１） R ≦ t ≦ 2r (1)
　この構成によれば、角部１１を樹脂層６内に好適に収めることができ、気泡をなす凹部１０の立体的な質感を高めることができる。 According to this configuration, the corner portion 11 can be suitably accommodated in the resin layer 6, and the three-dimensional texture of the concave portion 10 forming the bubbles can be enhanced.
　また、透光性基材４と樹脂層６との間には、カラー層５が介在している。 Further, a color layer 5 is interposed between the translucent substrate 4 and the resin layer 6.
　この構成によれば、透光性基材４と樹脂層６との間にカラー層５が介在しているので、カラー層５の色調を調整することで、透光板３の色調を制御することができる。また、カラー層５は、透光性基材４と樹脂層６との間に配置されているので、カラー層５の耐摩耗性、耐光性を高めることができる。 According to this configuration, since the color layer 5 is interposed between the translucent substrate 4 and the resin layer 6, the color tone of the translucent plate 3 is controlled by adjusting the color tone of the color layer 5. be able to. Moreover, since the color layer 5 is arrange | positioned between the translucent base material 4 and the resin layer 6, the abrasion resistance and light resistance of the color layer 5 can be improved.
　また、本実施の形態に係る樹脂成型方法は、インクジェットプリンタ１００で紫外線硬化樹脂の吐出と、当該吐出された紫外線硬化樹脂への紫外線照射とを繰り返すことで、複数の凹部１０を有する透光性の樹脂層６を透光性基材４上に形成する。 In addition, the resin molding method according to the present embodiment repeats the discharge of the ultraviolet curable resin and the ultraviolet irradiation to the discharged ultraviolet curable resin by the inkjet printer 100, thereby translucent having a plurality of recesses 10. The resin layer 6 is formed on the translucent substrate 4.
　この構成によれば、インクジェットプリンタ１００によって、紫外線硬化樹脂を透光性基材４上に吐出することで、樹脂層６を形成しているので、気泡をなす複数の凹部１０のレイアウトを制御することができる。 According to this configuration, since the resin layer 6 is formed by discharging the ultraviolet curable resin onto the translucent substrate 4 by the ink jet printer 100, the layout of the plurality of recesses 10 forming the bubbles is controlled. be able to.
　また、実施の形態に係る照明器具１は、上記の樹脂成型品からなる透光板３と、透光板３を保持する器具本体２とを有する。 Moreover, the lighting fixture 1 which concerns on embodiment has the translucent board 3 which consists of said resin molding goods, and the instrument main body 2 which hold | maintains the translucent board 3. FIG.
　この構成によれば、照明器具１に備わる透光板３の気泡のレイアウトを制御することができるので、より意匠性の高い照明器具１を提供することができる。 According to this configuration, it is possible to control the layout of the bubbles of the translucent plate 3 provided in the lighting fixture 1, and therefore it is possible to provide the lighting fixture 1 with higher design.
　（実施の形態２）
　上記実施の形態１では、透光板３が平板状である場合を例示して説明したが、この実施の形態２では、透光板３Ａが曲板状である場合を例示して説明する。なお、以降の説明において、上記実施の形態１と同一の部分には同一の符号を付してその説明を省略する場合がある。 (Embodiment 2)
Although the case where the translucent plate 3 has a flat plate shape is described as an example in the first embodiment, the case where the translucent plate 3A has a curved plate shape will be described as an example in the second embodiment. In the following description, the same parts as those in the first embodiment may be denoted by the same reference numerals and the description thereof may be omitted.
　図５は、実施の形態２に係る透光板３Ａの概略構成を示す断面図である。図５に示すように、透光板３Ａでは、透光性基材４ａと樹脂層６ａとが湾曲している。なお、図５においてカラー層は図示していないが、透光性基材４ａと樹脂層６ａとの間にカラー層を設けてもよい。 FIG. 5 is a cross-sectional view showing a schematic configuration of a light transmitting plate 3A according to the second embodiment. As shown in FIG. 5, in the translucent plate 3A, the translucent substrate 4a and the resin layer 6a are curved. Although the color layer is not shown in FIG. 5, a color layer may be provided between the translucent substrate 4a and the resin layer 6a.
　具体的には、透光性基材４ａと樹脂層６ａとは、断面視半円状に湾曲している。そして、樹脂層６ａは、透光性基材４ａの外周面に対して重ねられている。樹脂層６ａは、複数の凹部１０が透光性基材４ａ側で開放するように、透光性基材４ａの外周面に対して重ねられている。 Specifically, the translucent substrate 4a and the resin layer 6a are curved in a semicircular shape when viewed in cross section. And the resin layer 6a is overlaid with respect to the outer peripheral surface of the translucent base material 4a. The resin layer 6a is overlaid on the outer peripheral surface of the translucent substrate 4a so that the plurality of recesses 10 are opened on the translucent substrate 4a side.
　次に、透光板３Ａを成型するための樹脂成型方法について説明する。図６Ａ及び図６Ｂは、実施の形態２に係る樹脂成型方法の一工程を示す模式図である。 Next, a resin molding method for molding the translucent plate 3A will be described. 6A and 6B are schematic views showing one step of the resin molding method according to Embodiment 2. FIG.
　図６Ａに示すように、非接着性の基材２００上に、紫外線硬化型のインクジェットプリンタ１００によって樹脂層６ａを形成する。樹脂層６ａは、複数の凹部１０を有したフィルム状に形成されている。その後、基材２００から樹脂層６ａを剥離して、図６Ｂに示すように、湾曲した透光性基材４ａの外周面に、樹脂層６ａを貼り付ける。このとき、複数の凹部１０が透光性基材４ａ側で開放するように、樹脂層６ａを透光性基材４ａの外周面に配置する。これにより、図５に示す透光板３Ａが成型される。 As shown in FIG. 6A, a resin layer 6a is formed on a non-adhesive substrate 200 by an ultraviolet curing ink jet printer 100. The resin layer 6 a is formed in a film shape having a plurality of recesses 10. Then, the resin layer 6a is peeled from the base material 200, and the resin layer 6a is affixed to the outer peripheral surface of the curved translucent base material 4a as shown in FIG. 6B. At this time, the resin layer 6a is disposed on the outer peripheral surface of the translucent substrate 4a so that the plurality of recesses 10 are opened on the translucent substrate 4a side. Thereby, the translucent plate 3A shown in FIG. 5 is molded.
　以上のように、本実施の形態によれば、透光性基材４ａ及び樹脂層６ａは湾曲している。 As described above, according to the present embodiment, the translucent substrate 4a and the resin layer 6a are curved.
　また、本実施の形態によれば、インクジェットプリンタ１００で樹脂層６ａを非接着性の基材２００上に形成した後に、基材２００から樹脂層６ａを剥離して、湾曲した透光性基材４ａ上に貼り付ける。 Moreover, according to this Embodiment, after forming the resin layer 6a on the non-adhesive base material 200 with the inkjet printer 100, the resin layer 6a is peeled from the base material 200, and the light-transmitting base material which curved Paste on 4a.
　この構成によれば、曲板状の透光性基材４ａに対して、複数の凹部１０を有する樹脂層６ａが重ねられているので、曲板状の透光板３Ａに対しても、凹部１０がなす気泡の質感を高めることができる。特に、凹部１０が透光性基材４ａによって閉空間を形成しているので、より気泡らしく表現することができる。 According to this configuration, since the resin layer 6a having the plurality of recesses 10 is superimposed on the curved plate-shaped translucent substrate 4a, the recesses are also formed on the curved plate-shaped translucent plate 3A. The texture of bubbles formed by 10 can be enhanced. In particular, since the concave portion 10 forms a closed space by the translucent substrate 4a, it can be expressed more like a bubble.
　なお、曲板状の透光性基材４ａに対して樹脂層６ａを貼り付けなくとも、上述した平板状の透光板３に対して曲げ加工を施すことで、湾曲した透光板３Ａとすることも可能である。 In addition, even if it does not affix the resin layer 6a with respect to the curved-plate-shaped translucent base material 4a, by bending the flat-plate-shaped translucent plate 3 mentioned above, the curved translucent plate 3A and It is also possible to do.
　また、図７は、実施の形態２に係る他の透光板３ａの概略構成を示す断面図である。図７に示すように、透光板３ａの樹脂層６ａは、透光性基材４ａの内周面に対して重ねられていてもよい。この場合、樹脂層６ａは、複数の凹部１０が透光性基材４ａ側で開放するように、透光性基材４ａの内周面に対して重ねられている。 FIG. 7 is a cross-sectional view showing a schematic configuration of another translucent plate 3a according to the second embodiment. As shown in FIG. 7, the resin layer 6a of the translucent plate 3a may be overlaid on the inner peripheral surface of the translucent substrate 4a. In this case, the resin layer 6a is overlaid on the inner peripheral surface of the translucent substrate 4a so that the plurality of recesses 10 are opened on the translucent substrate 4a side.
　（実施の形態３）
　上記実施の形態１、２では、凹部１０内が空間である場合を例示して説明した。この実施の形態３では、樹脂層６をなす紫外線硬化樹脂（第一の紫外線硬化樹脂）とは屈折率の異なる紫外線硬化樹脂（第二の紫外線硬化樹脂）によって凹部１０が充填されている場合を例示して説明する。 (Embodiment 3)
In the said Embodiment 1, 2, the case where the inside of the recessed part 10 was space was illustrated and demonstrated. In the third embodiment, the concave portion 10 is filled with an ultraviolet curable resin (second ultraviolet curable resin) having a refractive index different from that of the ultraviolet curable resin (first ultraviolet curable resin) forming the resin layer 6. An example will be described.
　図８は、実施の形態３に係る透光板３Ｂの部分的な断面形状を拡大して示す断面図である。具体的には、図８は図３に対応する図である。 FIG. 8 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light-transmitting plate 3B according to the third embodiment. Specifically, FIG. 8 corresponds to FIG.
　図８に示すように、透光板３Ｂにおいては、第二の紫外線硬化樹脂からなる充填材１２が複数の凹部１０内に充填されている。充填材１２と、樹脂層６とは面一となっている。第二の紫外線硬化樹脂は、硬化前においてインクジェットプリンタにて吐出可能な紫外線硬化樹脂（紫外線硬化インク）であればよい。具体的には、第二の紫外線硬化樹脂は、未硬化時において粘度が１０ｃＰ以下、表面張力が３４±２ｍＮ／ｍを満たしている。つまり、充填材１２においても、インクジェットプリンタ１００にて形成されている。なお、インクジェットプリンタ１００における同一走査時に樹脂層６と、充填材１２とを形成してもよいし、凹部１０の全体が形成された後に、当該凹部１０内に第二の紫外線硬化樹脂（紫外線硬化インク）を吐出して硬化することで、充填材１２を形成してもよい。 As shown in FIG. 8, in the translucent plate 3B, a plurality of recesses 10 are filled with a filler 12 made of a second ultraviolet curable resin. The filler 12 and the resin layer 6 are flush with each other. The second ultraviolet curable resin may be an ultraviolet curable resin (ultraviolet curable ink) that can be discharged by an ink jet printer before curing. Specifically, the second ultraviolet curable resin has a viscosity of 10 cP or less and a surface tension of 34 ± 2 mN / m when uncured. That is, the filler 12 is also formed by the ink jet printer 100. The resin layer 6 and the filler 12 may be formed during the same scanning in the inkjet printer 100, or after the entire recess 10 is formed, a second UV curable resin (UV curing) is formed in the recess 10. The filler 12 may be formed by discharging and curing the ink.
　以上のように、本実施の形態によれば、凹部１０には、第一の紫外線硬化樹脂とは屈折率の異なる第二の紫外線硬化樹脂が充填されている。 As described above, according to the present embodiment, the recess 10 is filled with the second ultraviolet curable resin having a refractive index different from that of the first ultraviolet curable resin.
　この構成によれば、凹部１０が第二の紫外線硬化樹脂からなる充填材１２にて埋められているので、透光板３Ｂの表面を平滑化することができる。したがって、凹部１０内にホコリまたはゴミが溜まらなくなる。また、透光板３Ｂの表面が平滑化されているので、清掃性も高められる。 According to this configuration, since the recess 10 is filled with the filler 12 made of the second ultraviolet curable resin, the surface of the translucent plate 3B can be smoothed. Therefore, dust or dust does not collect in the recess 10. Moreover, since the surface of the translucent plate 3B is smoothed, the cleaning property is also improved.
　そして、第二の紫外線硬化樹脂は、樹脂層６をなす第一の紫外線硬化樹脂とは屈折率が異なっているので、凹部１０が充填材１２で埋まっていたとしても、当該凹部１０内を気泡として表現することができる。 Since the second ultraviolet curable resin has a refractive index different from that of the first ultraviolet curable resin forming the resin layer 6, even if the concave portion 10 is filled with the filler 12, the inside of the concave portion 10 has air bubbles. Can be expressed as
　なお、複数の凹部１０のうち、一部の凹部１０内を空間として、その他の凹部１０に充填材１２を充填してもよい。これにより、充填材１２の有無により複数の凹部１０が異なるきらめきを発することになり、意匠性を高めることができる。 In addition, you may fill the filler 12 in the other recessed part 10 by making the inside of some recessed parts 10 into space among several recessed parts 10. FIG. Thereby, the some recessed part 10 will emit the glitter which changes with the presence or absence of the filler 12, and can improve the designability.
　（実施の形態４）
　上記実施の形態１、２では、凹部１０が開放されている場合を例示して説明した。この実施の形態４では、凹部１０ｃが閉空間を形成しており、その閉空間内に第二の紫外線硬化樹脂が充填されている場合を例示して説明する。 (Embodiment 4)
In the said Embodiment 1, 2, the case where the recessed part 10 was open | released was illustrated and demonstrated. In the fourth embodiment, the case where the concave portion 10c forms a closed space and the second ultraviolet curable resin is filled in the closed space will be described as an example.
　図９は、実施の形態４に係る透光板３Ｃの部分的な断面形状を拡大して示す断面図である。具体的には、図９は図３に対応する図である。 FIG. 9 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light-transmitting plate 3C according to the fourth embodiment. Specifically, FIG. 9 corresponds to FIG.
　図９に示すように、透光板３Ｃにおいては、複数の凹部１０ｃが樹脂層６ｃ内に全体として埋没されており、閉空間を形成している。この凹部１０ｃがなす閉空間内に、第二の紫外線硬化樹脂からなる充填材１２ｃが充填されている。 As shown in FIG. 9, in the translucent plate 3C, a plurality of recesses 10c are buried in the resin layer 6c as a whole, forming a closed space. The closed space formed by the recess 10c is filled with a filler 12c made of a second ultraviolet curable resin.
　そして、充填材１２ｃは、インクジェットプリンタ１００にて形成されていてもよい。また、第二の紫外線硬化樹脂からなる複数の立体物を透光性基材４の表面上に散布してから、複数の立体物が埋まるように第一の紫外線硬化樹脂を透光性基材４上に塗布してもよい。この場合、立体物が充填材１２ｃとなる。 The filler 12c may be formed by the ink jet printer 100. In addition, after the plurality of three-dimensional objects made of the second ultraviolet curable resin are dispersed on the surface of the translucent substrate 4, the first ultraviolet curable resin is applied so that the plurality of three-dimensional objects are buried. 4 may be applied. In this case, the three-dimensional object becomes the filler 12c.
　以上のように、本実施の形態によれば、凹部１０は、閉空間を形成しており、当該閉空間内に前記第二の紫外線硬化樹脂が充填されている。 As described above, according to the present embodiment, the recess 10 forms a closed space, and the second ultraviolet curable resin is filled in the closed space.
　この構成によれば、閉空間である凹部１０ｃ内に第二の紫外線硬化樹脂からなる充填材１２ｃが充填されているので、凹部１０ｃがなす気泡の立体的な質感を高めることができる。 According to this configuration, since the filling material 12c made of the second ultraviolet curable resin is filled in the recessed portion 10c which is a closed space, the three-dimensional texture of bubbles formed by the recessed portion 10c can be enhanced.
　（実施の形態５）
　上記実施の形態４では、複数の凹部１０ｃが同一平面上に形成されている場合を例示して説明した。この実施の形態５では、複数の凹部１０ｄが樹脂層６ｄの厚み方向にも分散されている場合を例示して説明する。 (Embodiment 5)
In the said Embodiment 4, the case where the several recessed part 10c was formed on the same plane was illustrated and demonstrated. In the fifth embodiment, a case where a plurality of recesses 10d are dispersed also in the thickness direction of the resin layer 6d will be described as an example.
　図１０は、実施の形態５に係る透光板３Ｄの部分的な断面形状を拡大して示す断面図である。具体的には、図１０は図３に対応する図である。 FIG. 10 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light-transmitting plate 3D according to the fifth embodiment. Specifically, FIG. 10 corresponds to FIG.
　図１０に示すように、複数の凹部１０ｄは、樹脂層６ｄの厚み方向にも分散して配置されており、各凹部１０ｄ内には充填材１２ｄが充填されている。この構成によれば、厚み方向における複数の凹部１０ｄのレイアウトも制御することができるので、より多様な意匠性を発揮することができる。 As shown in FIG. 10, the plurality of recesses 10d are also distributed in the thickness direction of the resin layer 6d, and each recess 10d is filled with a filler 12d. According to this configuration, since the layout of the plurality of recesses 10d in the thickness direction can also be controlled, more various design properties can be exhibited.
　（実施の形態６）
　上記実施の形態１では、凹部１０の表面が露出している場合を例示して説明した。この実施の形態６では、凹部１０の表面にコート層が積層されている場合を例示して説明する。 (Embodiment 6)
In the said Embodiment 1, the case where the surface of the recessed part 10 was exposed was illustrated and demonstrated. In the sixth embodiment, a case where a coat layer is laminated on the surface of the recess 10 will be described as an example.
　図１１は、実施の形態６に係る透光板３Ｅの部分的な断面形状を拡大して示す断面図である。具体的には、図１１は図３に対応する図である。図１１に示すように、透光板３Ｅの凹部１０の表面には、コート層１５が形成されている。コート層１５を形成する材料としては、例えばフッ素などの防汚性のある材料が挙げられる。また、コート層１５は、上記のインク層と同じ材料で形成されていてもよい。 FIG. 11 is an enlarged cross-sectional view showing a partial cross-sectional shape of the light-transmitting plate 3E according to the sixth embodiment. Specifically, FIG. 11 corresponds to FIG. As shown in FIG. 11, a coat layer 15 is formed on the surface of the concave portion 10 of the translucent plate 3E. Examples of the material for forming the coat layer 15 include antifouling materials such as fluorine. The coat layer 15 may be formed of the same material as the ink layer.
　この構成によれば、凹部１０内がコート層１５によって覆われているので、凹部１０内が汚れてしまうことを抑制できる。なお、コート層１５は、凹部１０の表面から連続して、樹脂層６ｅの他の表面まで形成されていてもよい。この場合、樹脂層６ｅの他の表面の汚れも抑制することができる。 According to this configuration, since the recess 10 is covered with the coat layer 15, it is possible to suppress the recess 10 from being contaminated. The coat layer 15 may be formed continuously from the surface of the recess 10 to the other surface of the resin layer 6e. In this case, dirt on the other surface of the resin layer 6e can also be suppressed.
　（実施の形態７）
　上記実施の形態１では、複数の凹部１０が平面視でランダムに分散された場合を例示して説明した。この実施の形態７では、複数の凹部１０ｆのそれぞれの形状及び複数の凹部１０ｆのレイアウトが所定の規則性を持って形成されている場合を例示して説明する。 (Embodiment 7)
In the first embodiment, the case where the plurality of recesses 10 are randomly dispersed in a plan view has been described as an example. In the seventh embodiment, the case where the respective shapes of the plurality of recesses 10f and the layout of the plurality of recesses 10f are formed with a predetermined regularity will be described as an example.
　上述したように、インクジェットプリンタ１００で樹脂層６ｆを形成するのであれば、複数の凹部１０ｆのそれぞれの形状及び複数の凹部１０ｆのレイアウトを制御することができる。つまり、複数の凹部１０ｆのそれぞれの形状及び複数の凹部１０ｆのレイアウトを所定の規則性を持って形成することができる。ここで複数の凹部１０ｆのそれぞれの形状における「所定の規則性」とは、複数の凹部１０ｆのそれぞれの形状が規則性を持って決定されていることを言う。例えば、複数の凹部１０ｆのそれぞれの形状が同一または相似である場合、一定のパターンで複数の凹部１０ｆのそれぞれの形状が異なる場合などを含む。 As described above, if the resin layer 6f is formed by the inkjet printer 100, the shape of each of the plurality of recesses 10f and the layout of the plurality of recesses 10f can be controlled. That is, each shape of the plurality of recesses 10f and the layout of the plurality of recesses 10f can be formed with a predetermined regularity. Here, “predetermined regularity” in each shape of the plurality of recesses 10f means that each shape of the plurality of recesses 10f is determined with regularity. For example, the case where the shape of each of the plurality of recesses 10f is the same or similar, or the case where the shape of each of the plurality of recesses 10f is different in a certain pattern is included.
　また、複数の凹部１０ｆのレイアウトにおける「所定の規則性」とは、複数の凹部１０ｆのレイアウトが規則性を持って決定されていることを言う。例えば、一定のパターンで複数の凹部１０ｆが配列された場合、複数の凹部１０ｆが全体として均等に配列された場合、複数の凹部１０ｆが特定の記号を表現するように配列された場合などを含む。 Also, “predetermined regularity” in the layout of the plurality of recesses 10f means that the layout of the plurality of recesses 10f is determined with regularity. For example, a case where a plurality of recesses 10f are arranged in a certain pattern, a case where the plurality of recesses 10f are arranged uniformly as a whole, a case where the plurality of recesses 10f are arranged so as to express a specific symbol, and the like are included. .
　図１２Ａは、実施の形態７に係る透光板３Ｆの概略構成を示す平面図である。具体的には、図１２Ａは図２に対応する図である。図１２Ｂは、図１２Ａの透光板３Ｆを透過した光がなす陰影パターンを示すイメージ図である。 FIG. 12A is a plan view showing a schematic configuration of a translucent plate 3F according to Embodiment 7. FIG. Specifically, FIG. 12A corresponds to FIG. FIG. 12B is an image diagram showing a shadow pattern formed by light transmitted through the translucent plate 3F of FIG. 12A.
　図１２Ａに示すように、透光板３Ｆには、平面視形状が同一の複数の凹部１０ｆが、マトリクス状に配置されている。具体的には、凹部１０ｆは、平面視形状が楕円形状となっている。この透光板３Ｆを光が透過すると、図１２Ｂに示すような複数のライン状の陰影パターンＰ１が形成される。 As shown in FIG. 12A, the translucent plate 3F has a plurality of concave portions 10f having the same shape in plan view arranged in a matrix. Specifically, the recess 10f has an elliptical shape in plan view. When light passes through the translucent plate 3F, a plurality of line-shaped shadow patterns P1 as shown in FIG. 12B are formed.
　図１３Ａは、実施の形態７に係る他の透光板３Ｇの概略構成を示す平面図である。図１３Ｂは、図１３Ａの透光板３Ｇを透過した光がなす陰影パターンを示すイメージ図である。具体的には、図１３Ａは図１２Ａに対応する図であり、図１３Ｂは図１２Ｂに対応する図である。 FIG. 13A is a plan view showing a schematic configuration of another translucent plate 3G according to Embodiment 7. FIG. FIG. 13B is an image diagram showing a shadow pattern formed by light transmitted through the light transmitting plate 3G of FIG. 13A. Specifically, FIG. 13A corresponds to FIG. 12A, and FIG. 13B corresponds to FIG. 12B.
　図１３Ａに示すように、透光板３Ｆには、平面視形状が楕円状の複数の凹部１０ｇが、同心円状に配列されている。また、同心円の内側に行くにつれて、複数の凹部１０ｇの大きさが小さくなっている。同一円上に形成された複数の凹部１０ｇは同一の平面視形状である。この透光板３Ｇを光が透過すると、図１３Ｂに示すような複数の円状の陰影パターンＰ２が形成される。 As shown in FIG. 13A, the translucent plate 3F has a plurality of concavities 10g having an elliptical shape in plan view arranged concentrically. Moreover, the size of the plurality of recesses 10g decreases as it goes inside the concentric circles. The plurality of recesses 10g formed on the same circle have the same plan view shape. When light is transmitted through the translucent plate 3G, a plurality of circular shadow patterns P2 as shown in FIG. 13B are formed.
　このように、複数の凹部１０ｆ、１０ｇのそれぞれの形状及び複数の凹部１０ｆ、１０ｇのレイアウトが所定の規則性を持って形成されているので、複数の凹部１０ｆ、１０ｇがなす気泡の意匠性を高めることができる。さらに、気泡の意匠性を高めることができれば、透光板３Ｆ、３Ｇを透過した光がなす陰影の意匠性をも高めることができる。 As described above, since the respective shapes of the plurality of recesses 10f and 10g and the layout of the plurality of recesses 10f and 10g are formed with a predetermined regularity, the design of the bubbles formed by the plurality of recesses 10f and 10g is improved. Can be increased. Furthermore, if the design property of the bubble can be improved, the design property of the shadow formed by the light transmitted through the light transmitting plates 3F and 3G can be improved.
　（その他の実施の形態）
　以上、実施の形態に係る照明器具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。なお、以下の説明において、上記実施の形態と同一の部分については同一の符号を付してその説明を省略する場合がある。 (Other embodiments)
As mentioned above, although the lighting fixture which concerns on embodiment was demonstrated, this invention is not limited to the said embodiment. In the following description, the same parts as those in the above embodiment may be denoted by the same reference numerals and description thereof may be omitted.
　例えば、上記実施の形態では、透光板３がカラー層５を有している場合を例示して説明したが、カラー層５が設けられてなく、透光性基材４上に直接樹脂層６が形成されていてもよい。 For example, in the above embodiment, the case where the translucent plate 3 has the color layer 5 has been described as an example. However, the color layer 5 is not provided, and the resin layer is directly formed on the translucent substrate 4. 6 may be formed.
　また、上記実施の形態では、透光板３が矩形板状である場合を例示して説明したが、透光板３の形状は如何様でもよい。その他の形状としては、例えば、矩形以外の多角形状、円形状、楕円状などが挙げられる。 In the above embodiment, the case where the translucent plate 3 has a rectangular plate shape is described as an example, but the translucent plate 3 may have any shape. Examples of other shapes include polygonal shapes other than rectangles, circular shapes, and elliptical shapes.
　また、上記実施の形態は、凹部１０の角部１１がＲ形状である場合を例示して説明した。しかし、角部は段差状であってもよい。この場合においても、気泡の質感を高めることができる。なお、凹部の角部を段差状とするには、上述したレベリング処理を行わなければよい。なお、凹部の角部が段差状である場合には、当該段差状の各交点の近似曲線を求め、この近似曲線から曲率半径ｒを求めてもよい。 Further, the above embodiment has been described by exemplifying the case where the corner portion 11 of the concave portion 10 has an R shape. However, the corner may be stepped. Even in this case, the texture of the bubbles can be enhanced. In addition, in order to make the corner | angular part of a recessed part into a step shape, what is necessary is not to perform the leveling process mentioned above. In addition, when the corner | angular part of a recessed part is step shape, the approximate curve of each intersection of the said step shape may be calculated | required, and the curvature radius r may be calculated | required from this approximate curve.
　その他、実施の形態及び変形例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や、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 arbitrarily combining the components and functions in each embodiment without departing from the gist of the present invention, and forms obtained by making various modifications conceivable by those skilled in the art to the embodiments and modifications. Forms to be made are also included in the present invention.
１　照明器具
２　器具本体
３　透光板（樹脂成型品）
３ａ、３Ａ、３Ｂ、３Ｃ、３Ｄ、３Ｅ、３Ｆ、３Ｇ　透光板
４、４ａ　透光性基材
５　カラー層
６、６ａ、６ｄ、６ｅ、６ｆ　樹脂層（第一の紫外線硬化樹脂）
１０、１０ａ、１０ｂ、１０ｃ、１０ｄ、１０ｆ、１０ｇ　凹部
１１　角部
１２、１２ｃ、１２ｄ　充填材（第二の紫外線硬化樹脂）
１５　コート層
１００　インクジェットプリンタ
２００　基材
ｒ　曲率半径 DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Appliance main body 3 Light transmission board (resin molded product)
3a, 3A, 3B, 3C, 3D, 3E, 3F, 3G Translucent plate 4, 4a Translucent base material 5 Color layer 6, 6a, 6d, 6e, 6f Resin layer (first ultraviolet curable resin)
10, 10a, 10b, 10c, 10d, 10f, 10g Recess 11 Corner portion 12, 12c, 12d Filler (second ultraviolet curable resin)
15 Coat layer 100 Inkjet printer 200 Base material r Curvature radius

Claims (13)

  1. 　透光性基材と、
    　前記透光性基材上に重畳された樹脂層であって、当該樹脂層に分散された複数の凹部を有する透光性の樹脂層とを備え、
    　前記樹脂層は、第一の紫外線硬化樹脂により形成されている
    　樹脂成型品。     A translucent substrate;
    A resin layer superimposed on the translucent substrate, comprising a translucent resin layer having a plurality of recesses dispersed in the resin layer,
    The resin layer is formed of a first ultraviolet curable resin.
  2. 　前記凹部は、底部と側部とがなす角部がＲ形状または段差形状に形成されている
    　請求項１に記載の樹脂成型品。     The resin-molded product according to claim 1, wherein a corner portion formed by the bottom portion and the side portion of the concave portion is formed in an R shape or a step shape.
  3. 　前記樹脂層の厚みｔと、前記角部の曲率半径ｒとの関係は以下の式（１）を満たす
    　請求項２に記載の樹脂成型品。
    　ｒ≦ｔ≦２ｒ・・・（１）     The resin molded product according to claim 2, wherein a relationship between a thickness t of the resin layer and a curvature radius r of the corner portion satisfies the following expression (1).
    r ≦ t ≦ 2r (1)
  4. 　前記凹部には、前記第一の紫外線硬化樹脂とは屈折率の異なる第二の紫外線硬化樹脂が充填されている
    　請求項１～３のいずれか一項に記載の樹脂成型品。     The resin molded product according to any one of claims 1 to 3, wherein the concave portion is filled with a second ultraviolet curable resin having a refractive index different from that of the first ultraviolet curable resin.
  5. 　前記凹部は、閉空間を形成しており、当該閉空間内に前記第二の紫外線硬化樹脂が充填されている
    　請求項４に記載の樹脂成型品。     The resin molded product according to claim 4, wherein the concave portion forms a closed space, and the second ultraviolet curable resin is filled in the closed space.
  6. 　前記複数の凹部は、前記樹脂層の厚み方向に分散されている
    　請求項５に記載の樹脂成型品。     The resin molded product according to claim 5, wherein the plurality of recesses are dispersed in a thickness direction of the resin layer.
  7. 　前記複数の凹部の表面には、コート層が積層されている
    　請求項１～３のいずれか一項に記載の樹脂成型品。     The resin molded product according to any one of claims 1 to 3, wherein a coat layer is laminated on a surface of the plurality of recesses.
  8. 　前記複数の凹部のそれぞれの形状及び前記複数の凹部のレイアウトは、所定の規則性を持って形成されている
    　請求項１～７のいずれか一項に記載の樹脂成型品。     The resin molded product according to any one of claims 1 to 7, wherein each of the plurality of recesses and a layout of the plurality of recesses are formed with a predetermined regularity.
  9. 　前記透光性基材及び前記樹脂層は湾曲している
    　請求項１～８のいずれか一項に記載の樹脂成型品。     The resin molded product according to any one of claims 1 to 8, wherein the translucent substrate and the resin layer are curved.
  10. 　前記透光性基材と前記樹脂層との間には、カラー層が介在している
    　請求項１～９のいずれか一項に記載の樹脂成型品。     The resin molded product according to any one of claims 1 to 9, wherein a color layer is interposed between the translucent substrate and the resin layer.
  11. 　インクジェットプリンタで紫外線硬化樹脂の吐出と、当該吐出された紫外線硬化樹脂への紫外線照射とを繰り返すことで、複数の凹部を有する透光性の樹脂層を透光性基材上に形成する
    　樹脂成型方法。     Forming a translucent resin layer having a plurality of recesses on a translucent substrate by repeating the ejection of the ultraviolet curable resin with an inkjet printer and the ultraviolet irradiation of the ejected ultraviolet curable resin. Method.
  12. 　前記インクジェットプリンタで前記樹脂層を非接着性の基材上に形成した後に、前記基材から前記樹脂層を剥離して、湾曲した前記透光性基材上に貼り付ける
    　請求項１１に記載の樹脂成型方法。     The said resin layer is formed on a non-adhesive base material with the said inkjet printer, Then, the said resin layer is peeled from the said base material, and it affixes on the said transparent translucent base material. Resin molding method.
  13. 　請求項１～１０のいずれか一項に記載の樹脂成型品からなる透光板と、
    　前記透光板を保持する器具本体とを有する
    　照明器具。     A translucent plate comprising the resin molded product according to any one of claims 1 to 10,
    A lighting fixture having a fixture main body for holding the translucent plate.
PCT/JP2017/036069 2016-11-10 2017-10-04 Resin molded article, resin molding method and lighting device WO2018088068A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007227590A (en) * 2006-02-23 2007-09-06 Nichia Chem Ind Ltd Light emitting device
JP2010266829A (en) * 2009-05-18 2010-11-25 Three M Innovative Properties Co Optical member and device using the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007227590A (en) * 2006-02-23 2007-09-06 Nichia Chem Ind Ltd Light emitting device
JP2010266829A (en) * 2009-05-18 2010-11-25 Three M Innovative Properties Co Optical member and device using the same

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