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Light reflecting board

A technology of light reflection and reflector, applied in reflectors, lighting devices, components of lighting devices, etc., can solve the problems of thinning of light reflectors and increase of processing costs, so as to achieve low cost and reduce processing costs. , the effect of preventing deformation

Inactive Publication Date: 2008-08-20
FURUKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned method for preventing deformation of the light reflection plate has the following disadvantages: it is difficult to reduce the thickness of the light reflection plate because a metal sleeve is required, and since the light reflection plate and the metal sleeve are fixed, the Processing costs rise

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0028] There is a foamed plastic light reflection sheet (such as MCPET (trademark registration) manufactured by Furukawa Electric Industry Co., Ltd.): a thin sheet that is heated and foamed after impregnating a thermoplastic polyester sheet with carbon dioxide under high pressure, with a thickness of 1 mm and The internal cell diameter is 50 μm or less. In addition, there is a foamed plastic light-reflecting film made of cyclic polyolefin with a thickness of 0.5 mm and an internal cell diameter of 50 μm or less. When these light-reflecting sheets and films are inserted as a backlight reflector for a liquid crystal display device, the three-dimensional light reflector behind the fluorescent lamp becomes a light source for the backlight. Examples of manufacturing the three-dimensional light reflector include the following.

[0029] Such as figure 1 As shown, on the polyethylene terephthalate foamed sheet 2 (the above-mentioned MCPET) foamed with an average cell diameter of 50 μ...

Embodiment 2

[0034]As the light-reflecting sheet, in addition to using a non-stretched sheet of polyethylene terephthalate containing calcium carbonate (filler), a porous stretched sheet with a thickness of 0.25 mm formed with calcium carbonate as a nucleus with a thickness of 0.25 mm; On the surface of the sheet, a slit that does not penetrate the sheet is continuously formed along a straight line, and the sheet is bent into a valley shape along the slit groove; and except that an adhesive tape is attached to the back of the reflector as a whole, the same method as in Example 1 is obtained to obtain the slit of the present invention. light reflector. The light reflection plate of this example has a plurality of mountain-shaped protrusions along the longitudinal direction of the straight tube-shaped light source, and the shape of the mountain-shaped protrusions is held by an adhesive tape.

Embodiment 3

[0036] As the light-reflecting sheet, in addition to using an unstretched sheet of polyethylene terephthalate containing calcium carbonate (filler), a porous stretched sheet with a thickness of 0.1 mm formed with calcium carbonate as a nucleus is used. Except the composite sheet which laminated|stacked the aluminum sheet, it carried out similarly to Example 1, and obtained the light reflection plate of this invention. In addition, the above-mentioned composite sheet is laminated with an aluminum sheet because the porous stretched polyethylene terephthalate sheet is thin and involuntary, and cannot maintain a three-dimensional shape. The light reflection plate of this example has a plurality of mountain-shaped protrusions along the longitudinal direction of the straight tube-shaped light source, and the shape of the mountain-shaped protrusions is held by an adhesive tape.

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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 [0001] The present invention relates to a three-dimensional light reflection plate, which can make the backlights and lighting boxes such as electric lamp signs, liquid crystal display devices, and lighting fixtures brighter and thinner, and emit light efficiently. Background technique [0002] Conventionally, as a light reflection plate used in electric signboards, liquid crystal display devices, lighting fixtures, etc., a light reflection plate in which a synthetic resin reflection plate is processed into a three-dimensional shape has been proposed (for example, refer to Patent Document 1). [0003] Patent Document 1: Japanese Laid-Open Patent Publication No. 2002-122863 [0004] The light reflection plate processed into a three-dimensional shape from the synthetic resin reflection plate may be deformed after production due to factors such as strain during molding and shrinkage after molding. As a method for preventing the deformation of the above-mentione...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/08F21V7/00C08J9/00
Inventor 铃木修能宗良幸森田修幸永岛和也
Owner FURUKAWA ELECTRIC CO LTD
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