JP3033713U - Photo display device - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To obtain a photographic display device in which a change in color tone is suppressed to a minimum, including a case where a print photograph is displayed under natural light, and which is hardly changed over a long period of time. A photographic display device (1) comprises a printing paper (2) on which an image is printed, and two flat plates (3, 4) made of optical glass, which are sandwiched with the printing paper (2) and joined with an optical adhesive. The flat plate 4 on the back surface side of the paper 2 forms a light-shielding body on the inner surface 4a side of which a silver reflection layer 5 and a light-shielding layer 6 such as a black pigment, which is overlaid thereon, are formed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a photographic display device for displaying photographs, and more particularly, to a photographic display device capable of maintaining a color tone with almost no aging.

[0002]

[Prior art]

 Printed photographs printed on photographic paper are bleached over the years due to chemical reactions with oxygen and sulfur dioxide in the ambient air, and changes in color cannot be avoided. To minimize this change, contact with air should be removed and stored in a cool, dark place with controlled temperature and humidity.

[0003]

[Problems to be solved by the invention]

 However, in order to appreciate the printed photographs, it is necessary to display them in an indoor space, etc. In particular, when they are displayed in natural light, they will be affected by ultraviolet rays as well as the above gas effects. Inevitable rapid color change.

An object of the present invention is to obtain a photographic display device in which a change in color tone is minimized, including a case where a print photograph is displayed under natural light, and which is hardly changed for many years. .

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, it consists of a printing paper on which an image is printed and two optical glass flat plates sandwiching the printing paper and joined with an optical adhesive. Configured a photographic display device having a light-shielding body on the inner surface side of which a silver reflecting layer and a light-shielding layer of black pigment or the like stacked thereon were formed.

Since the above photographic display device is provided with two plane plates made of optical glass, which are bonded with an optical adhesive while sandwiching the photographic paper, the photographic paper on which the image is printed has a flatness and a high transparency. The face plate is shielded from oxygen and sulphite gas in the ambient atmosphere without being optically disturbed, ensuring chemical stability and preventing color change. In addition, since the flat plate on the back side of the photographic paper forms a light-shielding body in which a silver reflection layer and a light-shielding layer stacked on it are formed on the inner surface side, incident light from the rear is reflected by the silver reflection layer. The light is blocked by the light shielding layer even when transmitted through this reflective layer.

In the above photographic display device, when the outer surface of the light shield is matt-processed into a ground glass, the incident light from the back is scattered by the surface, so that the light coming from the back such as a point light source in the background is scattered. Even when the incident light is strong, the light that reaches the back side of the photographic paper is reduced and you can enjoy a natural printed photograph.

[0008]

[Embodiment of the invention]

 FIG. 1 is a partially cutaway perspective view of a photographic display device showing an embodiment of the present invention. The photographic display device 1 comprises a photographic printing paper 2 on which a photographic image is printed, and flat plates 3 and 4 which sandwich the photographic printing paper 2 and are joined to the respective surfaces thereof with an optical adhesive. Both flat plates 3 and 4 are transparent glass plates made of optical glass such as crystal glass and having a flat finish. The flat plate 4 on the back side of the photographic printing paper 2 forms a light-shielding body on the inner surface 4a side of which a reflective layer 5 made of vapor-deposited silver and a light-shielding layer 6 made of black pigment overlaid thereon are formed. The outer periphery of the mating portion of the flat plates 3 and 4 is coated with a moisture-proof resin (not shown).

Since the photographic display device 1 is provided with the two flat plates 3 and 4 made of optical glass, which are bonded to each other with the optical adhesive while sandwiching the photographic printing paper 2, the photographic display device 1 is protected from oxygen and sulfur dioxide gas in the ambient air. The image printed on the photographic printing paper 2 can be seen through the front flat plate 3 without distortion while being blocked and maintaining chemical stability.

Further, since the flat plate 4 on the back surface side of the photographic paper forms a light shield body by a reflecting mirror having a reflection layer 5 and a light shielding layer 6 formed on the inner surface side thereof, incident light from the rear is reflected by the reflection layer 5. Even when the light is reflected and transmitted through the reflective layer 5, the light is blocked by the light shielding layer 6.

Therefore, even if the display photograph is exposed to natural light in an indoor space or the like in order to appreciate the photograph, the photograph printed on the photographic paper should be printed with oxygen or sulfurous acid in the ambient atmosphere. It is possible to avoid discoloration and color tone change due to chemical reaction with gas, etc., and you can enjoy natural printed photographs with the optical glass on the front side and the light shield on the back side that have high flatness and transparency. .

FIG. 2 is a perspective view showing an exhibition state of the photographic display device of FIG. In (A), three or more protrusions 8 and 8 are erected from the base 7, and the lower end of the photographic display device 1 is locked to the protrusions 8 and 8. In (B), an inclined groove 10 is formed in the base 9, and the lower end of the photographic display device 1 is fitted into the groove 10 so that the photograph can be displayed and viewed.

In the above photographic display device, when the outer surface 4b of the flat plate 4 forming the light shield is ground into a glass by various methods such as surface polishing, corrosion, and resin coating, incident light from the rear is Since the light is scattered on the surface, the light that reaches the back side of the photographic paper is reduced even when the incident light from the back is strong, such as when using a point light source as the background, and you can enjoy a natural printed picture. .

[0014]

[Effect of the invention]

 The photographic display device according to the present invention has the following effects. Since the above photographic display device is equipped with two plane plates made of optical glass, which are sandwiched with photographic paper and bonded with an optical adhesive, the photographic paper on which an image is printed has an optical surface with high flatness and transparency. It is shielded from oxygen and sulfur dioxide in the ambient atmosphere without being physically disturbed, ensuring chemical stability and preventing color tone changes. In addition, since the flat plate on the back side of the photographic paper forms a light-shielding body in which a silver reflection layer and a light-shielding layer stacked on it are formed on the inner surface side, incident light from the rear is reflected by the silver reflection layer. The light is blocked by the light shielding layer even when transmitted through this reflective layer.

Therefore, in addition to photographic prints, not only semi-permanent preservation of old documents, books, and copies of paintings, but also for viewing printed photographs etc. Even if it is affected by the effects of the ambient air, it is possible to avoid fading and changes in color tone due to the influence of the ambient air, and enjoy a natural image with the optical glass on the front side and the light shield on the back side that have high flatness and transparency. be able to.

In the above photographic display device, when the outer surface of the light shield is matt-processed into a ground glass, the incident light from the back is scattered by the surface, so that the light from the back such as a point light source in the background is scattered. Even when the incident light is strong, the light reaching the back side of the photographic paper is reduced, and you can enjoy natural images such as printed photographs.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a photographic display device showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an exhibition state of the photographic display device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Photographic display device 2 Printing paper 3 Plane plate 4 Plane plate (light-shielding body) 4a Inner surface 4b Outer surface 5 Reflective layer 6 Light-shielding layer 7 Base 8 Projection 9 Base 10 Groove

Claims (2)

[Utility model registration claims] 1. A photographic printing paper on which an image is printed, and two optical glass flat plates joined with an optical adhesive sandwiching the photographic printing paper, the flat surface on the back side of the photographic paper being the inner surface thereof. A photographic display device having a light-shielding body on which a silver reflection layer and a light-shielding layer of black pigment or the like are formed on the side thereof. 2. The photographic display device according to claim 1, wherein the outer surface of the light shield is matt-processed into a ground glass shape.