CN107238879A - 光漫射板和照明器具 - Google Patents
光漫射板和照明器具 Download PDFInfo
- Publication number
- CN107238879A CN107238879A CN201710173070.0A CN201710173070A CN107238879A CN 107238879 A CN107238879 A CN 107238879A CN 201710173070 A CN201710173070 A CN 201710173070A CN 107238879 A CN107238879 A CN 107238879A
- Authority
- CN
- China
- Prior art keywords
- light diffusing
- acrylic resin
- diffusing board
- light
- base material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 111
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 110
- 239000000463 material Substances 0.000 claims abstract description 56
- 239000002245 particle Substances 0.000 claims abstract description 44
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 42
- 230000003287 optical effect Effects 0.000 claims abstract description 32
- 238000009792 diffusion process Methods 0.000 claims abstract description 31
- 230000009477 glass transition Effects 0.000 claims abstract description 17
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims description 30
- 239000011347 resin Substances 0.000 claims description 30
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 14
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 13
- 239000004425 Makrolon Substances 0.000 claims description 6
- 229920000515 polycarbonate Polymers 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 15
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 11
- -1 polytrifluorochloroethylene Polymers 0.000 description 11
- 238000000576 coating method Methods 0.000 description 10
- 239000000178 monomer Substances 0.000 description 10
- 239000002253 acid Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 150000001336 alkenes Chemical class 0.000 description 7
- BAPJBEWLBFYGME-UHFFFAOYSA-N acrylic acid methyl ester Natural products COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 3
- 235000013351 cheese Nutrition 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000004420 Iupilon Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 2
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 2
- 229920000638 styrene acrylonitrile Polymers 0.000 description 2
- 150000003440 styrenes Chemical class 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- PSGCQDPCAWOCSH-UHFFFAOYSA-N (4,7,7-trimethyl-3-bicyclo[2.2.1]heptanyl) prop-2-enoate Chemical compound C1CC2(C)C(OC(=O)C=C)CC1C2(C)C PSGCQDPCAWOCSH-UHFFFAOYSA-N 0.000 description 1
- KTZVZZJJVJQZHV-UHFFFAOYSA-N 1-chloro-4-ethenylbenzene Chemical class ClC1=CC=C(C=C)C=C1 KTZVZZJJVJQZHV-UHFFFAOYSA-N 0.000 description 1
- OEVVKKAVYQFQNV-UHFFFAOYSA-N 1-ethenyl-2,4-dimethylbenzene Chemical class CC1=CC=C(C=C)C(C)=C1 OEVVKKAVYQFQNV-UHFFFAOYSA-N 0.000 description 1
- NVZWEEGUWXZOKI-UHFFFAOYSA-N 1-ethenyl-2-methylbenzene Chemical compound CC1=CC=CC=C1C=C NVZWEEGUWXZOKI-UHFFFAOYSA-N 0.000 description 1
- JZHGRUMIRATHIU-UHFFFAOYSA-N 1-ethenyl-3-methylbenzene Chemical class CC1=CC=CC(C=C)=C1 JZHGRUMIRATHIU-UHFFFAOYSA-N 0.000 description 1
- WHFHDVDXYKOSKI-UHFFFAOYSA-N 1-ethenyl-4-ethylbenzene Chemical class CCC1=CC=C(C=C)C=C1 WHFHDVDXYKOSKI-UHFFFAOYSA-N 0.000 description 1
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 1
- QEDJMOONZLUIMC-UHFFFAOYSA-N 1-tert-butyl-4-ethenylbenzene Chemical class CC(C)(C)C1=CC=C(C=C)C=C1 QEDJMOONZLUIMC-UHFFFAOYSA-N 0.000 description 1
- CZZVAVMGKRNEAT-UHFFFAOYSA-N 2,2-dimethylpropane-1,3-diol;3-hydroxy-2,2-dimethylpropanoic acid Chemical compound OCC(C)(C)CO.OCC(C)(C)C(O)=O CZZVAVMGKRNEAT-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- ISRGONDNXBCDBM-UHFFFAOYSA-N 2-chlorostyrene Chemical class ClC1=CC=CC=C1C=C ISRGONDNXBCDBM-UHFFFAOYSA-N 0.000 description 1
- MTJGVAJYTOXFJH-UHFFFAOYSA-N 3-aminonaphthalene-1,5-disulfonic acid Chemical compound C1=CC=C(S(O)(=O)=O)C2=CC(N)=CC(S(O)(=O)=O)=C21 MTJGVAJYTOXFJH-UHFFFAOYSA-N 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- AOJOEFVRHOZDFN-UHFFFAOYSA-N benzyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC1=CC=CC=C1 AOJOEFVRHOZDFN-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- NSHHIZQAQLPYLS-UHFFFAOYSA-N butane-1,3-diol;2-methylprop-2-enoic acid Chemical class CC(O)CCO.CC(=C)C(O)=O NSHHIZQAQLPYLS-UHFFFAOYSA-N 0.000 description 1
- XXEMQRODPVLAGP-UHFFFAOYSA-N butane-1,4-diol;2-methylprop-2-enoic acid Chemical class CC(=C)C(O)=O.OCCCCO XXEMQRODPVLAGP-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 150000002314 glycerols Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- MMSLOZQEMPDGPI-UHFFFAOYSA-N p-Mentha-1,3,5,8-tetraene Chemical class CC(=C)C1=CC=C(C)C=C1 MMSLOZQEMPDGPI-UHFFFAOYSA-N 0.000 description 1
- 229920002285 poly(styrene-co-acrylonitrile) Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
- C08L33/12—Homopolymers or copolymers of methyl methacrylate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
- C09D7/69—Particle size larger than 1000 nm
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
- F21V29/87—Organic material, e.g. filled polymer composites; Thermo-conductive additives or coatings therefor
-
- 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
- F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
- F21V3/062—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics
- F21V3/0625—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics the material diffusing light, e.g. translucent plastics
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- 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
- F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
-
- 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
- F21V5/00—Refractors for light sources
-
- 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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
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- 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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/02—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for simulating daylight
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- 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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/04—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out infrared radiation
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- 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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/06—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0226—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures having particles on the surface
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/54—Encapsulations having a particular shape
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Abstract
本发明提供一种光漫射板和照明器具,光漫射板(1)具有热膨胀系数为4×10‑5~8×10‑5/K的热塑性树脂基材(2)、和设置于热塑性树脂基材(2)的表面的光漫射层(5),该光漫射层(5)包括包含玻璃化转变温度为30~50℃的一种或两种以上的丙烯酸树脂的丙烯酸树脂膜(3);和复合于丙烯酸树脂膜(3)中的平均粒径为1~15μm的丙烯酸树脂粒子(4)。
Description
技术领域
本发明涉及一种具有光透射性和光漫射性且具有对热的耐久性的光漫射板。另外,本发明还涉及一种使用了具有光透射性和光漫射性且具有对热的耐久性的光漫射板的照明器具。
背景技术
近年来,正在普及使用LED(Light Emitting Diode,发光二极管)作为光源的LED照明。LED光源为点光源,指向性强。由此,对于作为LED照明的照明罩使用的光漫射板来说,除了对以往的照明器具所要求的光透射性以外,还要求具有不会认识到为点光源的光源图像的隐蔽性。即,与以往的以荧光灯为光源的照明器具相比,对于以LED为光源的LED照明中所用的光漫射板来说,要求具有高的光漫射性。
因此,一直以来,以兼顾光透射性和光漫射性为目的,已知一种在基板的表面设有包含粒子和粘合剂的内部散射层与表面形状层的光漫射膜(例如参照专利文献1)。
现有技术文献
专利文献
专利文献1:日本特开2011-209658号公报
发明内容
发明要解决的问题
但是,照明器具中所用的照明罩与光源的距离近,通过来自光源的光照射而使温度上升。因此,对于作为照明罩使用的光漫射板,有可能因基材与设置于基材表面的具有光漫射性的涂膜的热膨胀之差而发生涂膜的剥离。
由此,本发明提供一种光漫射板和使用了该光漫射板的照明器具,该光漫射板与以往相比热塑性树脂基材与作为具有光漫射性的涂膜的光漫射层的密合性高,并且光漫射层的硬度和抗划伤性优异。
用于解决问题的手段
本发明的光漫射板的一个方式具有热膨胀系数为4×10-5~8×10-5/K的热塑性树脂基材、和设置于热塑性树脂基材的表面的光漫射层,该光漫射层包括:包含玻璃化转变温度为30~50℃的一种或两种以上的丙烯酸树脂的丙烯酸树脂膜、和复合于丙烯酸树脂膜中的平均粒径为1~15μm的丙烯酸树脂粒子。
另外,本发明的照明器具的一个方式具有光漫射板和LED光源,LED光源按照LED光源的发光面与热塑性树脂基材相对的方式配置于光漫射板的热塑性树脂基材侧。
另外,本发明的照明器具的另一方式具有光漫射板和LED光源,所述LED光源按照所述LED光源的发光面与所述光漫射层相对的方式配置于所述光漫射板的所述光漫射层侧。
发明的效果
在本发明的光漫射板和照明器具中,通过规定热塑性树脂基材的热膨胀系数和丙烯酸树脂膜中所用的丙烯酸树脂的玻璃化转变温度,可以在抑制热导致的丙烯酸树脂膜的剥离的同时,形成耐久性优异的丙烯酸树脂膜。另外,通过在丙烯酸树脂膜中复合丙烯酸树脂粒子,可以抑制丙烯酸树脂膜与丙烯酸树脂粒子的界面处的折射率差,可以使光高效地进行漫射。
附图说明
图1是表示本发明的实施方式的光漫射板的剖面示意图。
图2是表示本发明的实施方式的照明器具的剖面示意图。
图3是表示本发明的实施方式的照明器具的另一方式的剖面示意图。
图4是表示本发明的变形例的照明器具的剖面示意图。
具体实施方式
下面,参照附图,对本发明的实施方式进行说明。需要说明的是,以下说明的实施方式均示出了本发明的优选的一个具体例。因此,以下的实施方式中所示的数值、形状、材料、构成要素、构成要素的配置位置和连接形态、以及工序(步骤)和工序的顺序等仅为一例,并不对本发明进行限定。由此,在下述实施方式的构成要素中,关于表示本发明的最上位概念的独立权利要求中未记载的构成要素,作为任选的构成要素来说明。
另外,各图仅为示意图,未必严密地进行图示。在各图中,有时对于实质上相同的构成附上相同的符号,以省略或简化重复的说明。
(实施方式)
[光漫射板]
利用图1来说明本发明的实施方式的光漫射板1。图1是表示本发明的实施方式的光漫射板1的剖面示意图。
如图1所示,光漫射板1具有热塑性树脂基材2和光漫射层5。光漫射层5形成于热塑性树脂基材2的一个面21。另外,光漫射层5包括:包含一种或两种以上的丙烯酸树脂的丙烯酸树脂膜3;和复合于丙烯酸树脂膜3中的丙烯酸树脂粒子4。
作为包含于丙烯酸树脂膜3中的丙烯酸树脂,可以使用一种,也可以将两种以上混合使用。
此处,丙烯酸树脂膜3的膜厚最好薄于丙烯酸树脂粒子4的平均粒径。由此,丙烯酸树脂粒子4的一部分容易从丙烯酸树脂膜3的表面突出。由此,在光漫射层5的表面形成凹凸,因而光漫射性提高。
另外,在光漫射层5中,相对于丙烯酸树脂膜3中包含的丙烯酸树脂的总量100质量份,优选包含10~300质量份丙烯酸树脂粒子4,进一步优选包含20~100质量份。若丙烯酸树脂粒子4过少,则光漫射板1无法得到充分的光漫射性。另外,若丙烯酸树脂粒子4过多而过量,则热塑性树脂基材2与丙烯酸树脂膜3的密合性及光漫射层5的耐久性降低。
下面,对作为热塑性树脂基材2、丙烯酸树脂膜3和丙烯酸树脂粒子4使用的材料进行详细说明。
本实施方式中,热塑性树脂基材2的热膨胀系数为4×10-5/K~8×10-5/K,另外,丙烯酸树脂膜3中包含的丙烯酸树脂的玻璃化转变温度(Tg)为30℃~50℃。通过将这些热塑性树脂基材2和丙烯酸树脂膜3进行组合,热塑性树脂基材2与丙烯酸树脂膜3的密合性提高,并且,光漫射层5的硬度和抗划伤性等耐久性提高。认为这是因为,若Tg小于30℃,则涂膜表面的硬度降低,从而对于磨损的耐性降低,若Tg大于50℃,则密合性降低。
作为热塑性树脂基材2使用的材料只要热膨胀系数为4×10-5K~8×10-5K、且具有光透射性就没有特别限定。此处,具有光透射性是指为透明或半透明,至少总光线透射率为70%以上即可。
作为用作热塑性树脂基材2的材料的具体例,可以举出聚碳酸酯(PC)、甲基丙烯酸苯乙烯共聚物(MS)、聚酰胺(PA)、聚三氟氯乙烯(PCTFE)、聚苯乙烯(PS)、苯乙烯丙烯腈共聚物(AS)等。其中,从耐热性、成本、加工性、光学特性等方面出发,热塑性树脂基材2特别优选为聚碳酸酯。
为了参考,将各材料的热膨胀系数示于表1中。
表1
热塑性树脂基材的种类 | 热膨胀系数(×10-5/K) |
聚碳酸酯(PC) | 6.6 |
甲基丙烯酸苯乙烯共聚物(MS) | 6-8 |
聚酰胺66(PA) | 8 |
聚三氟氯乙烯(PCTFE) | 4.5-7 |
聚苯乙烯(PS) | 6-8 |
苯乙烯丙烯腈共聚物(AS) | 6-8 |
本实施方式中,丙烯酸树脂膜3中所用的丙烯酸树脂只要玻璃化转变温度为30℃~50℃就没有特别限定。另外,可以仅使用一种玻璃化转变温度为30℃~50℃的丙烯酸树脂,也可以将两种以上的丙烯酸树脂组合使用。
玻璃化转变温度为30℃~50℃的丙烯酸树脂是具有一种或两种以上碳-碳双键的单体的聚合物。作为单体的具体例,可以举出(甲基)丙烯酸酯系单体、苯乙烯系单体、烯烃系单体、和乙烯基系单体等。
更具体而言,作为(甲基)丙烯酸酯系单体,可以举出(甲基)丙烯酸甲酯、(甲基)丙烯酸-2-乙基己酯、(甲基)丙烯酸异冰片酯、(甲基)丙烯酸缩水甘油酯、(甲基)丙烯酸苄基酯、(甲基)丙烯酸硬脂酯、(甲基)丙烯酸月桂酯、(甲基)丙烯酸-2-羟基-3-苯氧基丙酯等。
另外,作为苯乙烯系单体,可以举出苯乙烯、2-甲基苯乙烯、3-甲基苯乙烯、4-甲基苯乙烯、4-乙基苯乙烯、4-叔丁基苯乙烯、2,4-二甲基苯乙烯等烷基取代苯乙烯、α-甲基苯乙烯、α-甲基-4-甲基苯乙烯等α-烷基取代苯乙烯、2-氯苯乙烯、4-氯苯乙烯等卤代苯乙烯等。
另外,作为烯烃系单体,可以举出乙烯、丙烯等。另外,作为乙烯基系单体,可以举出氯乙烯、偏氯乙烯等。
本实施方式中,作为丙烯酸树脂粒子4,只要是平均粒径为1~15μm的粒子状的丙烯酸树脂就没有特别限定。另外,可以使用一种丙烯酸树脂粒子,也可以将两种以上的丙烯酸树脂粒子组合使用。
丙烯酸树脂粒子4的平均粒径若小于1μm,则无法得到充分的光漫射性。另外,若丙烯酸树脂粒子4的平均粒径大于15μm,则为了将丙烯酸树脂粒子4复合并固定,丙烯酸树脂膜3的膜厚变厚,光透射性降低。
作为可以用作丙烯酸树脂粒子4的为粒子状的丙烯酸树脂的具体例,可以举出甲烷二醇、三羟甲基丙烷三(甲基)丙烯酸酯、二(甲基)丙烯酸乙二醇酯、二(甲基)丙烯酸聚乙二醇酯、二(甲基)丙烯酸1,3-丁二醇酯、二(甲基)丙烯酸1,4-丁二醇酯、二(甲基)丙烯酸1,6-己二醇酯、二(甲基)丙烯酸新戊二醇酯、羟基特戊酸新戊二醇二(甲基)丙烯酸酯、二(甲基)丙烯酸聚丙二醇酯、二(甲基)丙烯酸聚四酯、乙氧基化三羟甲基丙烷三(甲基)丙烯酸酯、丙氧基化三羟甲基丙烷三(甲基)丙烯酸酯、甘油三(甲基)丙烯酸酯、乙氧基化甘油三(甲基)丙烯酸酯等。
另外,丙烯酸树脂粒子4优选为多孔质。通过使丙烯酸树脂粒子4为多孔质,光也可以被丙烯酸树脂粒子4所具有的细孔所漫射,作为光漫射板1的光漫射性提高。丙烯酸树脂粒子4为多孔质的情况下,丙烯酸树脂粒子4的多孔质的平均细孔直径优选为10~100nm。
本实施方式中,通过将丙烯酸树脂膜3和丙烯酸树脂粒子4进行复合,从而形成光漫射层5。并且,由于丙烯酸树脂膜3和丙烯酸树脂粒子4均为丙烯酸树脂制,因而丙烯酸树脂膜3与丙烯酸树脂粒子4的界面处的折射率差小,与使用不同原料的材料时相比,具有优异的光漫射性和光透射性。
下面,对本实施方式的光漫射板1的制造方法进行说明。
首先,将作为丙烯酸树脂膜3使用的丙烯酸树脂、丙烯酸树脂粒子4和固化剂混合,制作树脂组合物。进而,在树脂组合物中加入稀释溶剂,制备树脂组合物的涂料。
接着,将树脂组合物的涂料涂布至热塑性树脂基材2的一个面21上,之后进行加热干燥,由此将涂膜固化,形成光漫射层5。
需要说明的是,树脂组合物中包含的固化剂只要将用作丙烯酸树脂膜3的丙烯酸树脂固化,就没有特别限定。作为具体例,可以举出硅酮系树脂、异氰酸酯系树脂、氨基系树脂等。
另外,热塑性树脂基材2可以使用平板状的基材,也可以使用预先成型为规定形状的基材。例如,可以在成型为圆顶形的热塑性树脂基材2上形成光漫射层5。
另外,光漫射板1也可以使用作为热塑性树脂基材2的平板状的物质,在形成光漫射层5后,通过真空成型进行拉伸,由此成型为规定的形状。
[照明器具]
接着,使用图2来说明本发明的实施方式的照明器具10。图2是表示本发明的实施方式的照明器具10的剖面示意图。
照明器具10具备基板11(照明基板)、配置于基板11上的多个LED光源12、和以覆盖LED光源12的方式配置的作为照明罩的光漫射板1。本实施方式中,光漫射板1按照热塑性树脂基材2侧的面与LED光源12相对的方式进行配置。即,LED光源12的发光面与光漫射板1的热塑性树脂基材2的表面相对。
在如此构成的照明器具10中,若LED光源12点亮,则光从LED光源12被照射至光漫射板1,光漫射板1被加热。但是,在本实施方式中的光漫射板1中,由于热塑性树脂基材2的热膨胀系数为4×10-5K~8×10-5K,丙烯酸树脂膜3中所用的丙烯酸树脂的玻璃化转变温度(Tg)为30℃~50℃,因而热塑性树脂基材2与丙烯酸树脂膜3的密合性高,即便施加热也可以抑制丙烯酸树脂膜3从热塑性树脂基材2发生剥离。另外,本实施方式中的光漫射层5(丙烯酸树脂膜3)的耐久性优异。另外,可以利用光漫射板1使LED光源12的光高效地发生漫射(散射)。
需要说明的是,如图1所示,本实施方式中,示出了光漫射板1为平板状的情况,但也可以如图3所示,使光漫射板1(照明罩)为圆顶形。
另外,本实施方式中,示出了具有多个LED光源12的照明器具10,但LED光源12的数量没有限定,可以为一个,也可以为多个。
另外,本实施方式中,按照热塑性树脂基材2侧的面与LED光源12相对的方式配置了光漫射板1,但也可以如图4所示那样,按照光漫射层5侧的面与LED光源12相对的方式来配置光漫射板1。即,图4中,LED光源12的发光面与光漫射板1的光漫射层5的表面相对。需要说明的是,图4中,也可以如图3所示那样使光漫射板1(照明罩)为圆顶形。
(实施例)
接着,对本实施方式的光漫射板1的实施例和比较例进行说明。
(实施例1)
作为丙烯酸树脂膜3中所用的丙烯酸树脂,使用玻璃化转变温度为30℃的丙烯酸树脂(DIC株式会社制造的ACRYDIC A-9510),作为丙烯酸树脂粒子4,使用平均粒径为8μm、细孔直径为20nm的交联聚甲基丙烯酸甲酯多孔质球状微粒(积水化成品工业株式会社制造的MBP-8)。另外,作为固化剂,使用水解性含甲硅烷基的硅酮化合物(DIC株式会社制造的ACRYDIC FZ-523)。另外,作为热塑性树脂基材2,使用聚碳酸酯(三菱工程塑料株式会社制造的Iupilon H-4000)。
首先,相对于丙烯酸树脂膜3中所用的丙烯酸树脂100质量份,使固化剂为20质量份、丙烯酸树脂粒子4为50质量份而对它们进行混合,加入作为稀释溶剂的丙二醇单甲基醚(关东化学社制造)600质量份,制备出树脂组合物的涂料。
然后,将所制备的树脂组合物的涂料涂布至聚碳酸酯(三菱工程塑料株式会社制造的Iupilon H-4000)的热塑性树脂基材2上而形成膜厚6μm的涂膜,在80℃加热干燥15分钟,由此使涂膜固化,从而制造出形成有光漫射层5的光漫射板1。
(实施例2)
作为丙烯酸树脂膜3中所用的丙烯酸树脂,使用玻璃化转变温度为50℃的丙烯酸树脂(DIC株式会社制造的ACRYDIC A-9540),作为固化剂,使用水解性含甲硅烷基的硅酮化合物(DIC株式会社制造的ACRYDICFZ-521),作为热塑性树脂基材2,使用苯乙烯-丙烯腈共聚物(Daicel Polymer株式会社制造的Cevian-N020),除此以外,与实施例1同样地制造出光漫射板1。
(实施例3)
作为丙烯酸树脂膜3中所用的丙烯酸树脂,使用将玻璃化转变温度为30℃的丙烯酸树脂(DIC株式会社制造的ACRYDIC A-9510)与玻璃化转变温度为50℃的丙烯酸树脂(DIC株式会社制造的ACRYDIC A-9540)按照以质量比计为7:3的方式混合而成的树脂,除此以外,与实施例1同样地制造出光漫射板1。
(实施例4)
相对于丙烯酸树脂膜3中所用的丙烯酸树脂100质量份,混合100质量份丙烯酸树脂粒子4,按照形成膜厚3μm的涂膜的方式,将所制备的树脂组合物的涂料涂布至热塑性树脂基材2上,除此以外,与实施例1同样地制造出光漫射板1。
(实施例5)
相对于丙烯酸树脂膜3中所用的丙烯酸树脂100质量份,混合20质量份丙烯酸树脂粒子4,按照形成膜厚10μm的涂膜的方式,将所制备的树脂组合物的涂料涂布至热塑性树脂基材2上,除此以外,与实施例1同样地制造出光漫射板1。
(实施例6)
作为丙烯酸树脂粒子4,使用平均粒径为8μm的交联聚甲基丙烯酸甲酯的无孔质球状微粒(积水化成品工业株式会社制造的MBX-8),除此以外,与实施例1同样地制造出光漫射板1。
(实施例7)
按照形成膜厚20μm的涂膜的方式,将所制备的树脂组合物的涂料涂布至热塑性树脂基材2上,除此以外,与实施例1同样地制造出光漫射板1。
(实施例8)
相对于丙烯酸树脂膜3中所用的丙烯酸树脂100质量份,混合5质量份丙烯酸树脂粒子4,除此以外,与实施例1同样地制造出光漫射板1。
(比较例1)
作为丙烯酸树脂膜3中所用的丙烯酸树脂,使用玻璃化转变温度为90℃的丙烯酸树脂(DIC株式会社制造的ACRYDIC BZ-1160),除此以外,与实施例1同样地制造出光漫射板1。
(比较例2)
作为丙烯酸树脂膜3中所用的丙烯酸树脂,使用玻璃化转变温度为15℃的丙烯酸树脂(DIC株式会社制ACRYDIC A-9521),作为固化剂,使用水解性含甲硅烷基的硅酮化合物(DIC株式会社制造的ACRYDICFZ-521),除此以外,与实施例1同样地制造出光漫射板1。
(评价)
接着,对所制造的上述实施例1~8和比较例1、2的光漫射板,评价了光漫射性、外观、密合性、表面硬度和抗划伤性。
(光漫射性评价)
使用雾度计(日本电色工业株式会社制造“NDH2000”),对于实施例1~8、比较例1~2的光漫射板测定了总光线透射率。测定中,使光漫射层侧朝向光源而进行测定。若为总光线透射率为60%以上、且具有光均匀性、不存在灯图像的状态,则可以说能够兼顾优异的器具效率和光均匀性,因而制定下述判定基准。
·判定基准
65%以上:○
60~65%:△
小于60%:×
(外观评价)
使用松下公司制造的方形底座灯(square base light)XL524PFULT9,对于实施例1~8、比较例1~2的光漫射板1,通过目视确认了光源图像的隐蔽性。光漫射板1切割成符合该器具的尺寸(350×350mm),测定中使光漫射层侧朝向光源,按照以下的判定基准进行了评价。
·判定基准
A:无法确认光源形状,发光均匀。
B:光源形状模糊,但能够判断相邻的LED光源的间隔。
C:能够确认光源形状。
(一次密合性评价)
根据JIS K-5600-5-6,通过棋盘格试验测定了实施例1~8、比较例1~2的光漫射板1中的热塑性树脂基材2与丙烯酸树脂膜3的密合性。
(二次密合性评价)
将实施例1~8、比较例1~2的光漫射板1作为试验样品,在沸水中浸渍30分钟后,取出进行干燥,根据JIS K-5600-5-6通过棋盘格试验测定了热塑性树脂基材2与丙烯酸树脂膜3的密合性。
(表面硬度评价)
根据JIS K5600(涂料一般试验方法)中的划痕硬度(铅笔法),测定了实施例1~8、比较例1~2的光漫射板1中的光漫射层5的硬度。
(抗划伤性评价)
使用钢丝绒(等级:#0000号),以100g/cm2的负荷将实施例1~8、比较例1~2的光漫射板1中的光漫射层5磨损10个来回,评价了磨损后的覆膜表面的划伤的有无。判定基准如下。
·判定基准
○:无法通过目视确认划伤,或者划伤为2个以下。
×:可以确认到2个以上的划伤。
以上,将关于实施例1~8和比较例1~2的光漫射板1的条件归纳示于表2,将各评价的结果示于表3。
表3
光漫射性 | 外观 | 一次密合性 | 二次密合性 | 表面硬度 | 抗划伤性 | |
实施例1 | ○ | A | 100/100 | 10O/100 | HB | ○ |
实施例2 | ○ | A | 1O0/100 | 100/100 | HB | ○ |
实施例3 | ○ | A | 10O/100 | 1OO/100 | HB | ○ |
实施例4 | ○ | A | 1OO/100 | 1OO/100 | HB | ○ |
实施例5 | ○ | A | 1O0/100 | 100/100 | HB | ○ |
实施例6 | △ | B | 100/100 | 100/100 | HB | ○ |
实施例7 | × | A | 1O0/100 | 100/100 | HB | ○ |
实施例8 | ○ | C | 1OO/100 | 1OO/100 | HB | ○ |
比较例1 | ○ | A | 1OO/100 | 0/1OO | F | ○ |
比较例2 | ○ | A | 1OO/100 | 1OO/100 | 2B | × |
在比较例1的光漫射板1中,由于丙烯酸树脂膜3中所用的丙烯酸树脂的玻璃化转变温度高为90℃,因而在二次密合试验中确认到涂膜剥离。另外,在比较例2的光漫射板1中,由于丙烯酸树脂膜3中所用的丙烯酸树脂的玻璃化转变温度低为15℃,因而虽然可确保热塑性树脂基材2与丙烯酸树脂膜3的密合性,但丙烯酸树脂膜3的表面硬度降低,抗划伤性降低。
另一方面,在实施例1~8的光漫射板1中,一次密合性、二次密合性、表面硬度和抗划伤性均显示出优异的结果。
实施例6中,粒子状的丙烯酸树脂不是多孔质,而是无孔质的球状粒子,粒子的比表面积降低,因而光漫射性和光透射性略降低。
实施例7中,丙烯酸树脂膜3的膜厚比丙烯酸树脂粒子4的平均粒径厚,因而表面的凹凸减少,光的透射性略降低。
实施例8中,丙烯酸树脂粒子4的含量少,光漫射性降低,光源图像的隐蔽性略降低。
如上所述,在本实施方式的光漫射板1和照明器具10中,通过在热膨胀系数为4×10-5K~8×10-5K的热塑性树脂基材2的一个面21使用玻璃化转变温度(Tg)为30℃~50℃的丙烯酸树脂而形成丙烯酸树脂膜3,可以提供具有密合性和耐久性优异的丙烯酸树脂膜3的光漫射板1和照明器具10。另外,可以提供能够高效地使光发生漫射的光漫射板1和照明器具10。
符号说明
1 光漫射板
2 热塑性树脂基材
3 丙烯酸树脂膜
4 丙烯酸树脂粒子
5 光漫射层
10 照明器具
11 基板
12 LED光源
Claims (8)
1.一种光漫射板,其具有:
热膨胀系数为4×10-5~8×10-5/K的热塑性树脂基材;和
设置于所述热塑性树脂基材的表面的光漫射层,该光漫射层包括:包含玻璃化转变温度为30~50℃的一种或两种以上的丙烯酸树脂的丙烯酸树脂膜、和复合于所述丙烯酸树脂膜中的平均粒径为1~15μm的丙烯酸树脂粒子。
2.如权利要求1所述的光漫射板,其中,相对于所述丙烯酸树脂的总量100质量份,所述光漫射层包含10~300质量份的所述丙烯酸树脂粒子。
3.如权利要求1或2所述的光漫射板,其中,所述丙烯酸树脂粒子为多孔质。
4.如权利要求3所述的光漫射板,其中,所述多孔质的平均细孔直径为10~100nm。
5.如权利要求1或2所述的光漫射板,其中,所述丙烯酸树脂膜的膜厚小于所述丙烯酸树脂粒子的平均粒径。
6.如权利要求1~5中任一项所述的光漫射板,其中,所述热塑性树脂基材为聚碳酸酯。
7.一种照明器具,其具备权利要求1或2所述的光漫射板和LED光源,
所述光漫射板按照所述光漫射板中的所述热塑性树脂基材侧的面与所述LED光源相对的方式进行配置。
8.一种照明器具,其具备权利要求1或2所述的光漫射板和LED光源,
所述光漫射板按照所述光漫射板中的所述光漫射层侧的面与所述LED光源相对的方式进行配置。
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