JP2010256648A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reflection plate to be integrated into an instrument device to be mounted on an automobile, a motorcycle e.g., or to be integrated into a head-up display and having excellent durability. <P>SOLUTION: In the reflection plate including a base material 1, a metallic reflection layer 3 formed on the base material 1 and a protective layer 4 formed to cover the reflection layer 3, the formation range of the reflection layer 3 is set on the inside of an outer edge of the base material 1 and a predetermined area R including no reflection layer 3 is formed between the outer edge of the reflection layer 3 and the outer edge of the base material 1, so that the protective layer 4 continuously covers the reflection layer 3 and the predetermined area R. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a reflector plate incorporated in an instrument device or a head-up display mounted on, for example, an automobile or a motorcycle.

  As this type of display device, for example, a reflector described in Patent Document 1 below is known. This reflector reflects the image of the display to the viewer side, and is composed of a transparent base material and a reflective layer formed on the base material. The reflection layer is made of a metal film such as an aluminum film or a titanium dioxide film, and is easily eroded by moisture. Therefore, the surface of the reflection layer is covered with a transparent protective layer.

Japanese Utility Model Publication No. 05-083789

  However, when the reflective layer is laminated on the surface of the base material and the protective film is sequentially laminated on the surface of the reflective layer and covered with the protective layer on the surface of the reflective layer, the outer peripheral edge of the reflective layer is in the external atmosphere. Therefore, there is a problem that the outer peripheral end of the reflective layer may be gradually eroded by being exposed to moisture in the air.

  This invention is made | formed in view of this point, and aims at obtaining the reflecting plate excellent in durability.

  In order to achieve the above object, the present invention provides a reflector including a base material, a metal reflective layer formed on the base material, and a protective layer formed to cover the reflective layer. The formation range of the reflective layer is set inside the outer edge of the base material to form a predetermined region without the reflective layer between the outer edge of the reflective layer and the outer edge of the base material, and the protective layer is The reflective layer and the predetermined region are continuously covered.

  Further, the present invention is characterized in that the predetermined region is formed with a constant width over the entire circumference of the reflective layer.

  Further, in the present invention, the base material is a synthetic resin, and the base material region located between the base material and the reflective layer and the predetermined region are continuously covered with an intermediate layer, and the protective layer is The reflective layer and the intermediate layer region located on the predetermined region are continuously covered.

  ADVANTAGE OF THE INVENTION According to this invention, the initial objective can be achieved and the reflecting plate excellent in durability can be provided.

The front view of the reflecting plate by the 1st Embodiment of this invention. AA sectional drawing of FIG.

  1 and 2, a reflector according to an embodiment of the present invention includes a base material 1, an intermediate layer 2, a reflective layer 3, and a protective layer 4.

  The base material 1 is made of a synthetic resin such as PMMA or PC, for example, and has a substantially semi-cylindrical outer shape.

  The intermediate layer 2 is formed by adhering, for example, a silica-based material to the base material 1.

  The intermediate layer 2 has a function of improving the adhesion between the base material 1 made of synthetic resin and the reflective layer 3 made of metal.

  The reflective layer 3 reflects an image of a display (not shown), and is formed by, for example, using aluminum with an emphasis on cost, and depositing this aluminum on the surface of the intermediate layer 2 to increase the thickness of the layer (film). By adjusting, a complete mirror or a half mirror can be obtained.

The reflective layer 3 is formed by vapor-depositing aluminum on the surface of the intermediate layer 2, and the formation range of the reflective layer 3 is set inside the outer edge of the base material 1. A predetermined region R without the reflective layer 3 is formed between the outer edge of the first layer and the predetermined region R is formed with a constant width over the entire circumference of the reflective layer 3. The protective layer 4 continuously covers the reflective layer 3 and, in this case, the predetermined region R formed on the intermediate layer 2.
In addition, it is necessary to select the material of the reflective layer 3 that is not colored as much as possible and has a high reflectance. Generally, silver or aluminum is used, but it is preferable to select aluminum from the viewpoint of cost. However, since aluminum is weaker than water than silver, the present invention is more effective.

  The protective layer 4 is made of, for example, silicon dioxide. In order to prevent the reflective layer from being oxidized or corroded by oxygen or moisture contained in the air, the intermediate layer 2 region that forms the predetermined region R with the reflective layer 3 is used. Thus, the reflective layer 3 is covered with the protective layer 4 including its side surfaces, and contact with the outside air is blocked.

  The reflection plate configured as described above may be formed one by one, or may be formed by cutting a large substrate formed with each layer.

  As described above, in the present embodiment, the reflection including the substrate 1, the metal reflection layer 3 formed on the substrate 1, and the protective layer 4 formed to cover the reflection layer 3. In the plate, the formation range of the reflective layer 3 is set on the inner side of the outer edge of the base material 1 to form a predetermined region R without the reflective layer 3 between the outer edge of the reflective layer 3 and the outer edge of the base material 1 for protection. Since the layer 4 continuously covers the reflective layer 3 and the predetermined region R, the reflective layer 3 is entirely covered with the protective layer 4 including the side surfaces thereof, and the contact with the outside air is blocked. It is possible to provide an excellent reflector.

  Further, in the present embodiment, the predetermined region R is formed with a constant width over the entire circumference of the reflective layer 3, so that the distance between the outer edge of the reflective layer 3 and the outer edge of the substrate 1 is constant and depends on the distance difference. The difference in the degree of corrosion can be suppressed and stable protection performance can be secured.

  Moreover, in this embodiment, the base material 1 is a synthetic resin, and the base material 1 region and the predetermined region R located between the base material 1 and the reflective layer 3 are continuously covered with the intermediate layer 2, and the protective layer 4 continuously covers the reflective layer 3 and the intermediate layer 2 region located on the predetermined region R, so that the adhesion of the reflective layer 3 can be maintained even when the base material 1 made of an inexpensive synthetic resin is used. it can.

1 Base material 2 Intermediate layer 3 Reflective layer 4 Protective layer R Predetermined region

Claims (3)

In a reflector including a base material, a metal reflective layer formed on the base material, and a protective layer formed so as to cover the reflective layer, the formation range of the reflective layer is defined by the base material. A predetermined area without the reflective layer is formed between the outer edge of the reflective layer and the outer edge of the substrate by setting the inner side of the outer edge, and the protective layer continuously connects the reflective layer and the predetermined area. A reflector characterized by covering. The reflector according to claim 1, wherein the predetermined region is formed with a constant width over the entire circumference of the reflective layer. The base material is a synthetic resin, and a base material region located between the base material and the reflective layer and the predetermined region are continuously covered with an intermediate layer, and the protective layer is formed of the reflective layer and the predetermined layer. The reflector according to claim 1, which continuously covers an intermediate layer region located on the region.

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