CN100412575C - Light reflector - Google Patents
Light reflector Download PDFInfo
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- CN100412575C CN100412575C CNB2005800021399A CN200580002139A CN100412575C CN 100412575 C CN100412575 C CN 100412575C CN B2005800021399 A CNB2005800021399 A CN B2005800021399A CN 200580002139 A CN200580002139 A CN 200580002139A CN 100412575 C CN100412575 C CN 100412575C
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- Prior art keywords
- thin slice
- light reflecting
- film
- reflecting board
- shape
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Abstract
A technology for effectively preventing deformation of a light reflector plate fabricated by forming a synthetic resin reflector plate into a three-dimensional shape enabling a thinner light reflector plate, and additionally, reducing processing costs is provided. An adhesive tape 10 for shape-retention is adhered onto a reflector plate 6 which is fabricated by forming predetermined areas of a light-reflecting plastic film or sheet 2 into a three-dimensional shape.
Description
Technical field
The present invention relates to a kind of light reflecting board of solid, it makes rear light such as electric light signboard, liquid crystal indicator, ligthing paraphernalia and lighting case brighter, slimming and luminous effectively more.
Background technology
In the past, the light reflecting board as being used in electric light signboard, liquid crystal indicator, ligthing paraphernalia etc. proposed a kind of light reflecting board (for example with reference to patent documentation 1) that plastic reflecting plate is processed into three-dimensional shape.
Patent documentation 1: Japanese publication communique spy opens the 2002-122863 communique
Described plastic reflecting plate is processed into the light reflecting board of three-dimensional shape since the strain when being shaped and be shaped after factors such as contraction, after making, may cause distortion.As the method that prevents above-mentioned light reflecting board distortion, following scheme has been proposed: hole or slit cut-out portion are set on light reflecting board, on the metallic sleeve pipe, form a claw-like bending part in addition, in the hole of light reflecting board and slit cut-out portion, insert the claw-like bending part of this metallic sleeve pipe, fix light reflecting board and metallic sleeve pipe by this claw-like bending part of bending again.
But the distortion of above-mentioned light reflecting board prevents that from there is following shortcoming in mode: because the metal sleeve pipe of needs, so be difficult to realize the slimming of light reflecting board, and because of light reflecting board and metal sleeve pipe are fixed, so processing charges rises.
Summary of the invention
The present invention In view of the foregoing forms, its objective is a kind of technology that provides: except preventing well that plastic reflecting plate is processed into the distortion of light reflecting board of three-dimensional shape, can also be the light reflecting board slimming, and can reduce processing charges.
The present invention provides a kind of light reflecting board to achieve the above object, it is characterized by solid shape holding element on reflecting plate, and this reflecting plate is the reflecting plate that three-dimensional shape is processed at the regulation place of plastic sheeting that reflected light is used or thin slice.
Among the present invention,, prevent the distortion of reflecting plate, and keep this shape according to the effect of this shape holding element being processed into solid shape holding element on the reflecting plate of three-dimensional shape.Therefore, compare with the situation of using the metallic sleeve pipe, light reflecting board of the present invention can be made thinlyyer.In addition, because be solid shape holding element on reflecting plate, so compare with the situation of metallic sleeve pipe with the fixed light reflecting plate, the present invention can save processing charges.
The effect of invention
According to the present invention, except can preventing well that plastic reflecting plate is processed into the distortion of light reflecting board of three-dimensional shape, can also be the light reflecting board slimming, and can reduce processing charges, realize cost degradation.
Description of drawings
Fig. 1 is that the otch before the bending of expression thin slice is processed the figure of example and otch expanded state.
Fig. 2 has been to use the light reflecting board oblique view of the thin slice of Fig. 1.
Fig. 3 is the light reflecting board side view of presentation graphs 2 and the figure of daylight lamp position.
Fig. 4 is the back view of the light reflecting board of Fig. 2.
Fig. 5 is the oblique view that expression has formed the thin slice of arch jut.
Embodiment
The present invention below is described in further detail.Among the present invention, the plastic sheeting of using as reflected light or the material of thin slice can be enumerated: tygon, polypropylene, polystyrene, Polyvinylchloride, polychlorinated biphenyl, polyethylene terephthalate, resins for universal use such as polyvinyl alcohol (PVA), polycarbonate, polybutylene terephthalate, polyamide, polyacetal, polyphenylene oxide, ultra-high molecular weight polyethylene, polysulfones, polyethersulfone, polyphenylene sulfide, polyacrylate, polyamidoimide, polyetherimide, polyetheretherketone, polyimide, teflon, liquid crystal polymer, engineering plastics such as fluororesin, or the interpolymer of these materials or potpourri etc.Good polyester, polyphenylene sulfides such as wherein preferred thermotolerance, resistance to impact, polypropylene, cyclic polyolefin.In addition, in above-mentioned catoptrical plastic sheeting or thin slice, can suitably add antioxidant, UV resistant agent, lubricant, pigment, hardening agent etc. in the employed resin.In addition, also can coat the overlay that contains these adjuvants.
More specifically, desirable example as catoptrical plastic sheeting or thin slice, can enumerate following film or thin slice: a kind of have film or a thin slice that a plurality of mean air bubble diameters are the thermoplastic resin of micro-bubble below the 50 μ m or pore in inside, the film or the thin slice that perhaps contain the thermoplastic resin of filler are that karyomorphism becomes a plurality of cavitys with the filler.In this case, in the latter's film or thin slice, the film or the thin slice of thermoplastic resin that contains filler is preferred: the not extension film or the thin slice that will contain filler are shaped, by extending this not extension film or thin slice, with the filler poriness extension film or the thin slice that karyomorphism becomes a plurality of cavitys.
Among the present invention, do not limit the method for the reflecting plate of catoptrical plastic sheeting or thin slice being made three-dimensional shape, but can suit to adopt following method: on above-mentioned film or thin slice, be interrupted to form the otch that extends through the narrow width of opposite side surfaces from a side surface along straight line, again this film or thin slice along above-mentioned otch bending.
That is,, can wait hot briquetting, but because the factors such as contraction after the hot briquetting cause the machining precision variation, mould and processing cost uprise with mould for resinous reflecting plate is processed into three-dimensional shape.To this, the otch of cutting seam wire on plastic sheeting or thin slice, can be bent into mountain valley shape and critically be made into three-dimensional shape simply at this position, not need expensive mould, can be with the low-cost Bending Processing that realizes based on simple smelting tool etc.
In this case, as the film or the thin slice that form otch, can use following film or thin slice rightly: a kind of have film or a thin slice that a plurality of mean air bubble diameters are the thermoplastic resin of micro-bubble below the 50 μ m or pore in above-mentioned inside, and the film or the thin slice that contain the thermoplastic resin of filler, be that karyomorphism becomes a plurality of cavitys with the filler.
In addition, the kerf width that forms on above-mentioned plastic sheeting or thin slice is below the 3mm, and 1 incision length is below the 10mm, and the length that is not cut off part between 2 adjacent otch is that 1mm is above just for suitable.That is, after cutting one otch on film or the thin slice, along the cut line bending time, be cut off in notch portion in order to prevent material, the part that is not cut off between the otch of its interruption is preferably in more than the 1mm.In addition, about the incision length aspect, the interruption with suture shape of use sale by standard is spaced apart the parting tool of the following cut-out sword of 10mm and processes comparatively cheap and practical.
If on film or thin slice, do not cut aforesaid otch together, and after making a concavity to give as security line with straight line on film or the sheet surface when this line is bent into the mountain valley shape, because bending force is big, and the line position bending of not necessarily can being in prison, so the shortcoming of Bending Processing difficulty is arranged.
In addition, if plastic sheeting that does not have bubble, pore or cavity or thin slice are added man-hour with the cut-out of suture shape equally, it is many that the number of bending becomes, or under the situation of working (finishing) area increasing (situation of Fig. 1 for example described later and Fig. 2), film or thin slice are hard and can't integral body cut off equably when opposite joint wire place of incision carries out time processing, therefore sometimes can not be with thin slice or film well along the suture bending.To this, has the very soft and easy cut-out of the film of bubble, pore or cavity or thin slice, so film that suture is many, area is big or thin slice also can cut more beautifully.
In the present invention, preferably have the shape holding element of mechanical characteristic of the distortion of the light reflecting board that can prevent to be processed into three-dimensional shape, for example, can enumerate adhesive tape, rope, drawing pin etc.The shape holding element wishes to have 130 ℃ thermotolerance.
When using adhesive tape to be used as the shape holding element, do not limit the material of the matrix material of adhesive tape, but for example can enumerate following material: metals such as polymkeric substance such as polyester, polyolefin, cyclic polyolefin, polyamide, polyacrylate, polycarbonate, polyacetal, polyphenylene oxide, polymethylpentene, liquid crystal polymer and aluminium, stainless steel.When in the matrix material of adhesive tape, using polymkeric substance, wherein preferably use good polyester, polypropylene, cyclic polyolefins such as thermotolerance, resistance to impact.Moreover adhesive tape is preferably colourless or white.If on the adhesive tape other colors, when light reflecting board was used in liquid crystal indicator, its color can appear on the picture.In addition, consideration the problems referred to above can suitably be selected the sticker material of adhesive tape.
Represent light reflecting board of the present invention for example below with reference to accompanying drawing, yet the present invention is not limited to following example.
(embodiment 1)
A kind of foamed plastic light-reflecting sheet (for example the MCPET of Furukawa electrical industry system (trade mark login) etc.) is arranged: on the signature sheet of thermoplasticity polyester, soak into after the carbon dioxide with high pressure, heating also makes the thin slice of its foaming, and thickness is 1mm and the air entrapment diameter is below the 50 μ m.In addition, also have thickness be 0.5mm, air entrapment diameter be 50 μ m following, by foamed plastic light reflective film that cyclic polyolefin constituted.When these light reflection sheets and film were used as retreating lamp and inserting with reflecting plate of liquid crystal indicator, the cubic light reflecting plate of daylight lamp rear side became the light source that retreats lamp, can be for following example as the example of making this cubic light reflecting plate.
As shown in Figure 1, on foaming thin sheet 2 (above-mentioned MCPET) with about 4 times thickness foamed polyethylene terephthalate of mean air bubble diameter below the 50 μ m and 1mm, to use sword thickness be 0.7～1.42mm and cut off the long bladed die casting cutting blade of thin slice with the suture shape that 5mm length is interrupted at interval, with linearity formation otch 4.Afterwards, as shown in Figure 2, foaming thin sheet 2 is bent into the mountain valley shape becoming the chevron shape of straight line at otch 4 positions, thereby obtains reflecting plate 6.The spacing of the chevron shape of bending is designed to cooperate the spacing P of the daylight lamp 8 that retreats lamp as shown in Figure 3, and top, mountain top is on about centre position P/2 of 8 of daylight lamps.Bending Processing is not used mould, and uses the smelting tool bending one by one along the mountain valley shape.
Secondly, in order to keep the shape of reflecting plate 6, shown in Fig. 2～4, on reflecting plate 6 back sides (face of a side opposite) with light source 8 sides, the end to end of 3 adhesive tapes 10 vertical with notch portion 4 from the Width of reflecting plate 6 sticked at certain intervals, can obtain light reflecting board of the present invention thus.At this moment, not applying tension force ground is not attached to adhesive tape 10 on the reflecting plate 6 floppily.This routine light reflecting board is, reflecting plate 6 has a plurality of mountain shaped protrusions portion 12 along the long side direction of straight tube shape light source 8, keeps the light reflecting board of the shape of above-mentioned mountain shaped protrusions portion 12 with adhesive tape 10.
(comparative example)
Except not pasting adhesive tape, obtain light reflecting board with embodiment 1 at the back side of reflecting plate 6 the samely.This light reflecting board since the strain when being shaped and be shaped after contraction, cause distortion.
(embodiment 2)
As the light reflection sheet,, be that the poriness of the karyomorphism thickness 0.25mm that becomes a plurality of cavitys is extended thin slice with lime carbonate except using the not extension thin slice that contains the polyethylene terephthalate of lime carbonate (filler) by extension; On sheet surface, do not run through the otch of thin slice, thin slice is bent into the mountain valley shape along this groove of the notch along the continuous formation of straight line; And beyond pasting adhesive tape on the whole at the reflecting plate back side, obtain light reflecting board of the present invention in the same manner with embodiment 1.This routine light reflecting board is, reflecting plate has a plurality of mountain shaped protrusions portion along the long side direction of straight tube shape light source, keeps the light reflecting board of the shape of above-mentioned mountain shaped protrusions portion with adhesive tape.
(embodiment 3)
As the light reflection sheet, except using the not extension thin slice that contains the polyethylene terephthalate of lime carbonate (filler) by extension, be that the poriness of the karyomorphism thickness 0.1mm that becomes a plurality of cavitys is extended on the thin slice aluminium flake in addition beyond the composite sheet of lamination, is obtained light reflecting board of the present invention in the same manner with embodiment 1 with lime carbonate.Above-mentioned in addition composite sheet, thin slice is thin not to have independence owing to the poriness of polyethylene terephthalate is extended, and can't keep three-dimensional shape, therefore with aluminium flake lamination in addition.This routine light reflecting board is, reflecting plate has a plurality of mountain shaped protrusions portion along the long side direction of straight tube shape light source, keeps the light reflecting board of the shape of above-mentioned mountain shaped protrusions portion with adhesive tape.
(embodiment 4)
The foaming thin sheet (above-mentioned MCPET) of the polyethylene terephthalate that bubbles as about 4 times thickness with mean air bubble diameter below the 5 μ m and 1mm, use as shown in Figure 5 the motherboard 20 of the polyethylene terephthalate before bubbling is shaped to by punching press (press) beyond the thin slice of foaming after the shape of (cross section the is semicircular in shape slightly) jut 22 that has crooked arch, obtain light reflecting board of the present invention in the same manner with embodiment 1.In addition, carrying out punching press before foaming, is can break because carry out the words bubble of punching press after bubbling.This routine light reflecting board is that reflecting plate has a plurality of arch juts along the long side direction of straight tube shape light source, keeps the light reflecting board of the shape of above-mentioned arch jut with adhesive tape.
In addition, in the above-mentioned example end to end of 3 adhesive tapes from the Width at the reflecting plate back side sticked at certain intervals, perhaps be attached to the comprehensive of the reflecting plate back side, but adhesive tape quantity and bonding method can suitably be set, and key is to prevent that with adhesive tape the reflecting plate distortion from getting final product.
(embodiment 5)
As the shape holding element, except the aluminium glue band of used thickness 0.1mm, all the other are identical with embodiment 1.The light reflecting board that this is routine has a plurality of mountain shaped protrusions portion along the long side direction of straight tube shape light source, brings the shape that keeps above-mentioned mountain shaped protrusions portion with aluminium glue.
(utilizability on the industry)
According to light reflecting board of the present invention, can be so that behind electric light signboard, liquid crystal indicator, ligthing paraphernalia etc. Move back lamp and lighting case is brighter, more slimming and effectively luminous. In addition, according to the present invention, Except preventing from well plastic reflecting plate is processed into the change of the light reflecting board of three-dimensional shape Beyond the shape, can be the light reflecting board slimming, and reduce processing charges to reach cost degradation.
Claims (7)
1. a light reflecting board is characterized in that,
This light reflecting board is a solid shape holding element and forming on reflecting plate, and this reflecting plate is the reflecting plate that the regulation place of catoptrical plastic sheeting or thin slice is processed into three-dimensional shape,
Described reflecting plate be interrupted to form the otch that extends through the narrow width of opposite side surfaces from a side surface along straight line on described catoptrical plastic sheeting or thin slice, this film or thin slice along described otch bending.
2. light reflecting board according to claim 1 is characterized in that,
Described catoptrical plastic sheeting or thin slice are that inside has film or the thin slice that a plurality of mean air bubble diameters are the thermoplastic resin of following micro-bubble of 50 μ m or pore.
3. light reflecting board according to claim 1 is characterized in that,
Described catoptrical plastic sheeting or thin slice are to contain filler and are the film or the thin slice of the karyomorphism thermoplastic resin that becomes a plurality of cavitys with described filler.
4. light reflecting board according to claim 3 is characterized in that,
Described film or the thin slice that contains the thermoplastic resin of filler is: form the not extension film or the thin slice that contain filler, and by extending this not extension film or thin slice, be poriness extension film or the thin slice that karyomorphism has become a plurality of cavitys with described filler.
5. according to each the described light reflecting board in the claim 1 to 4, it is characterized in that,
Described shape holding element is an adhesive tape.
6. light reflecting board according to claim 5 is characterized in that,
The matrix material of described adhesive tape is made of at least a institute of polyester, polypropylene, cyclic polyolefin.
7. light reflecting board according to claim 5 is characterized in that,
Described reflecting plate has a plurality of juts, and being shaped as along the long side direction of straight tube shape light source of each jut keeps the shape of described jut with described shape holding element.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004003972 | 2004-01-09 | ||
| JP003972/2004 | 2004-01-09 | ||
| JP178502/2004 | 2004-06-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1910482A CN1910482A (en) | 2007-02-07 |
| CN100412575C true CN100412575C (en) | 2008-08-20 |
Family
ID=37700832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800021399A Expired - Fee Related CN100412575C (en) | 2004-01-09 | 2005-01-07 | Light reflector |
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| Country | Link |
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| CN (1) | CN100412575C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866029B (en) * | 2010-06-09 | 2011-09-21 | 宁波激智新材料科技有限公司 | Deformation-resistant optics reflecting film, liquid crystal display device and LED lighting equipment |
| JP2012084628A (en) * | 2010-10-08 | 2012-04-26 | Sumitomo Electric Ind Ltd | White reflection flexible printed circuit board |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6460422A (en) * | 1987-09-01 | 1989-03-07 | Hiroyuki Ito | Folding sunshade snow frost protecting plate for vehicle |
| JPH06260010A (en) * | 1993-03-05 | 1994-09-16 | Mitsubishi Electric Corp | Louver for lighting |
| JP2001184914A (en) * | 1999-12-28 | 2001-07-06 | Furukawa Electric Co Ltd:The | Cylindrical reflection plate structure of straight tube type fluorescent lamp |
| JP2002122863A (en) * | 2000-10-17 | 2002-04-26 | Hitachi Ltd | Liquid crystal display device |
| JP2003022701A (en) * | 2001-07-09 | 2003-01-24 | Furukawa Electric Co Ltd:The | Light box |
| CN1672067A (en) * | 2002-07-24 | 2005-09-21 | 优泊公司 | Light reflector |
| CN1910398A (en) * | 2004-01-13 | 2007-02-07 | 东丽株式会社 | Lighting reflection plate and information displaying backlight device |
-
2005
- 2005-01-07 CN CNB2005800021399A patent/CN100412575C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6460422A (en) * | 1987-09-01 | 1989-03-07 | Hiroyuki Ito | Folding sunshade snow frost protecting plate for vehicle |
| JPH06260010A (en) * | 1993-03-05 | 1994-09-16 | Mitsubishi Electric Corp | Louver for lighting |
| JP2001184914A (en) * | 1999-12-28 | 2001-07-06 | Furukawa Electric Co Ltd:The | Cylindrical reflection plate structure of straight tube type fluorescent lamp |
| JP2002122863A (en) * | 2000-10-17 | 2002-04-26 | Hitachi Ltd | Liquid crystal display device |
| JP2003022701A (en) * | 2001-07-09 | 2003-01-24 | Furukawa Electric Co Ltd:The | Light box |
| CN1672067A (en) * | 2002-07-24 | 2005-09-21 | 优泊公司 | Light reflector |
| CN1910398A (en) * | 2004-01-13 | 2007-02-07 | 东丽株式会社 | Lighting reflection plate and information displaying backlight device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1910482A (en) | 2007-02-07 |
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