JP3160338U - Illuminated picture frame - Google Patents

Abstract

There is provided a picture frame for lighting display in an actual state without particularly processing a drawing or a photograph. A light source provided in a straight line along each hollow inner surface of a pair of opposing two wall surfaces of a rectangular frame housing, and a reflecting surface at each inner surface position of the housing edge and the housing bottom in the vicinity of the light source, In addition, a transparent plate such as acrylic or polycarbonate having a cross-sectional shape with a central portion projecting downward is provided in an upper surface surrounded by the edge of the housing and facing the bottom surface of the housing. [Selection] Figure 1

Description

The present invention has a lighting device inside the frame housing of a rectangular frame, and a frame, a photo stand, etc. for illuminating an object to be illuminated (hereinafter referred to as an illuminated object) such as a drawing, photograph, document or work set on the bottom surface thereof. The present invention relates to a device and a method for a display board (hereinafter referred to as a frame).

In recent years, as a so-called “digital photo frame”, dedicated devices for displaying various digital photographic information obtained by a digital camera on a liquid crystal display device have been commercialized and are spreading. Conventionally, there is a display device that prints a photograph on a film or a transparent resin plate in a translucent state by a special method and irradiates the back surface with a so-called backlight light source. However, it is possible to illuminate and display objects such as paper and cloth with printed or printed screens such as drawings and photographs, or actual objects such as pressed flowers, quilting, cutouts, embroidery cloth, three-dimensional reliefs and toys. Devices such as possible picture frames and similar photo frames are not currently available on the market.

Utility model literature

Registered Utility Model No. 3154022

Utility model literature

Actual application 2009-007946

The present invention provides a light source provided along the hollow interior of the casing wall surface, and the object to be illuminated mounted in the casing as it is has a relatively large surface area even though the thickness is small. Provide a frame that can be illuminated. The surface area of the object to be illuminated can be as large as a poster, and the thickness of the housing can be reduced to about several centimeters.

Problems that the device tries to solve

As described above, the frame casing is smaller in thickness than the surface area of the object to be illuminated. The structure which irradiates this to-be-illuminated body from the front with the light source accommodated in the peripheral part (edge part) wall surface of the frame housing which can be taken is considered normally. However, since the light source illuminates the object to be illuminated from the front at this time, the portion near the light source is bright and the portion far from the light source tends to be dark, so even if many illumination light sources are provided on the edge wall surface of the frame casing, There is a tendency that the peripheral part of the illuminating body is bright and the central part is dark and not uniformly illuminated. Since the present invention illuminates the illuminated body with almost uniform illuminance even in such a configuration, the configuration of the light source, the way of reflection and refraction of the optical path, the mutual positional relationship with the illuminated body, etc. are optimized. A simple and well-structured frame with uniform and clear lighting will be realized.

Means for solving the problem

The illuminated frame of the present invention has an illuminated body mounted on the bottom surface of a rectangular housing, and a light source is housed in a housing wall surface of a pair of frame edge sides facing the top of the periphery, and this light is transmitted to the frame. The direction of the object to be illuminated mainly on the bottom surface at the lower center of the frame is efficiently reflected on the surface of the glass or acrylic resin surface (hereinafter referred to as transparent plate) having a cross-sectional shape convex in the bottom surface (downward) direction provided on the top surface (upper) Are set so as to complement each other together with the vicinity of the frame edge that tends to be brightened by the light directly directed to the object to be illuminated, and obtain a substantially uniform illumination effect as a whole. The light source is configured by providing a linear light-emitting body such as a fluorescent tube or a cold cathode tube (CCFL) or a light-emitting diode (LED) appropriately arranged on a plurality of straight lines inside the frame. Usually, light emitted from a linear light source in a radial direction perpendicular to the longitudinal axis direction and directly reaching the object to be illuminated is diffused in a portion near the light source and diffused in a portion far away from the light source, and becomes dark in inverse proportion to the square of the distance. In this way, the illuminance of the object to be illuminated becomes uneven and it becomes difficult to obtain uniform and clear illumination. However, the present invention not only provides such inconvenience but also the non-direct light from the light source. The problem is solved by using a completely new method of reflecting and reaching far from the light source and illuminating brightly for effective use, and complementing each other with the light sources at the opposite edges.

The invention's effect

With the present invention, a picture frame that can be illuminated from the front with a uniform brightness even on a relatively large screen without changing the drawings, photos, documents, or workpieces in a normal state can be used as a photo frame. It can also be used for commercial illuminated billboards, exhibition equipment, display boards, etc. In this new product field, the present invention brightly illuminates the things you want to decorate and memories, and gives you more peace of mind and gives you peace of mind. Pioneering can be expected.

Hereinafter, the present invention will be described with reference to application examples shown in FIGS. FIG. 1 is a schematic perspective view of the structure of an illuminated frame as a representative example of the apparatus according to the present invention, FIG. 2 is a sectional view taken along line XX in FIG. 1, and FIG. 3 is an application example of FIG. The structure of this device is mainly the frame case (1) of the illuminated frame case, the frame edge part (2), the upper transparent plate (3) in the center of the frame case, the stock transparent plate (9), the bottom surface of the case The main structure of (6) and the illumination light source (4) provided on the inner surface of the frame edge (2), a pair of upper reflection surface (7) and lower reflection surface (71) provided in the vicinity, and illumination It consists of an object to be illuminated (5).

The YY line in FIG. 1 indicates a generally longitudinal direction perpendicular to the paper surface of the frame housing (1), and is installed in the frame housing (1) immediately below the frame edge (2). When the light source (4) can be regarded as a linear light source such as a fluorescent tube or a CCFL, the longitudinal direction is set in a direction parallel to the light source. . The respective arrangement states are indicated by broken lines on the right side edge and the left side edge in FIG. 1, and the linear light source (4) is shown on the left and right sides of the central CC line (shown by a one-dot chain line) in the side cross section of FIG. The state provided symmetrically is shown. The operational effect of the present invention is schematically shown by the solid line arrow for the light path from the light source on the left side (A side in the figure) and the broken line arrow from the light source on the right side (B side in the figure). Light is emitted radially from the light source (4) toward the inside of the housing in the direction of the side cross section, but the thick solid and broken lines in the light path are respectively shown on the bottom surface (6) of the housing from the left and right light sources. In the direct light toward the illuminated body (5) provided on the A side, the A side close to the illuminated body (5) usually has a relatively large amount of light and is bright and on the contrary, the B side has a small amount of light and becomes dark. Since this illuminance is almost inversely proportional to the square of the distance from the A side or B side, the central C portion illuminated by both is darkest and uniform illuminance cannot be obtained. The light paths from the left and right other than the direct light directed to the directly illuminated body (5) are indicated by thin solid lines and broken lines, respectively, but are reflected by the upper reflecting surface (7) and the lower transparent plate (9), and the light from the left side is A The light from the right side can reach the A side which is farther from the B side. Here, the lower reflector (9) is shaped so that the side cross section has both ends at the upper ends of the left and right frame edges (2) as shown in FIG. 2, and the space between them protrudes toward the bottom plate (6) of the housing. Thus, a transparent material such as an acrylic plate or a polycarbonate plate is formed in a curved or straight and curved composite cross-sectional shape and provided at the upper center of the frame housing (1). The upper reflecting surface (7) is provided in the direction parallel to the linear light source (4) in the frame housing (1) below the left and right frame edge portions (2) as shown in FIG. The lower transparent plate (9) is close to the frame edge (2) side and the other end is provided near the upper portion of the linear light source (4). With this combination, the non-direct light is directed toward the upper reflecting surface (7) and the lower transparent plate (9), the angle of incidence on the reflecting surface is reduced, and the ratio of total reflection is increased. The set reflection is possible. As described above, the light from the light source (4) combined with the direct light described above irradiates the illuminated body (5) almost evenly as indicated by the optical path arrow. A hollow arrow pointing upward in the figure schematically shows that a uniform illumination effect can be obtained. If a lower reflecting surface (71) is provided on the bottom surface below the upper reflecting plate (7), the light from the light source (4) is appropriately reflected, and the flat glass is superimposed on the lower transparent plate (9). When the upper transparent plate (3) such as a plate or an acrylic plate is provided, the light that does not totally reflect on the lower transparent plate (9) and is leaked is reflected to the lower illuminated body (5) to some extent, and the illumination effect can be further improved.

As shown in FIG. 2, according to the present invention, it is easier to obtain more uniform illumination by increasing the ratio of non-directly reaching light than directly reaching the illuminated body (5) from the light source (4). For this reason, the main ratio of the emitted light from the light source (4) in the same sectional view is set so as to be directed to the lower transparent plate (9) as appropriate. In the same figure, the LL line | wire shows the said state typically with the central optical path from a light source (4).

Further, as shown in the side sectional view of FIG. 3, when the light source (4) is a fluorescent tube, CCFL, or the like, the optical path (not shown) is directed to the back side, so The light path (not shown) is reflected by reflecting in the direction of the illuminating body, or by providing a substantially convex condensing lens (11) that refracts within an appropriate solid angle in front of an individual point light source such as an LED. ) To supplement the purpose of the present invention. In the case of an LED light source, if a transparent or translucent light diffusing plate (8) is provided in the optical path, the illumination effect may be improved by bringing it closer to the characteristics of the line light source. The reflecting mirror (10), the lens (11), and the light diffusing plate (8) are all stored below the frame edge (2) so that they cannot be seen from above the frame housing.

It should be noted that the lower transparent plate (9) and the upper reflector (7) shown in the present invention can be integrally formed, and can be expected to be easier to handle and stabilize the reflection effect. Further, the method of the present invention can be more effective than the case where the surface area that can be similarly applied to the remaining edge portions other than the frame edge portion (2) of the pair of target positions used in the description is large.

Schematic perspective view of the structure according to the present invention Side sectional view of the present invention (XX section in FIG. 1) Side sectional view of the present invention (XX cross section in FIG. 1) Other application examples

(1) Frame housing (2) Edge (3) Upper transparent plate (4) Light source (5) Illuminated body (6) Bottom surface (7) Upper reflective surface (8) Diffuser plate (9) Lower transparent plate (10 ) Reflector (11) Lens (71) Lower reflector

Claims (6)

A pair of two wall surfaces facing each other of a rectangular frame-shaped casing, and a light source provided linearly along each hollow inner surface, a reflecting surface at each inner surface position of the casing edge and bottom near the light source, and the casing A transparent plate such as acrylic or polycarbonate with a cross-sectional shape with a central part protruding downward is provided in the upper surface that is surrounded by the edge of the body and faces the bottom surface, and the drawings, photographs, documents, or workpieces installed inside the bottom surface Illuminated frame consisting of a structure that can illuminate the object to be illuminated. In the illuminated frame according to claim 1, one end of the reflection surface provided on the inner surface of the housing rim facing each other in the vicinity of the light source is connected on the rim side of the transparent plate having a cross-sectional shape with the central portion projecting downward, Illuminated picture frames having a structure in which each other end is provided close to the upper part of each light source and can illuminate an object to be illuminated such as a drawing, photograph, document or work set inside the bottom surface. 3. A reflection provided on the inner surface of the opposite edge of the casing in the vicinity of the light source according to claim 2, on the side of the transparent plate having a cross-sectional shape in which the central portion of the illuminated frame according to claim 1 is convex downward. One end of the surface is integrally formed continuously, and each other end is provided close to the upper part of each light source, and an object to be illuminated such as a drawing, photograph, document, or workpiece placed inside the bottom surface can be irradiated. Illuminated picture frame consisting of structure. 3. The illuminated frame according to claim 2, wherein the main direction of the radiated light orthogonal to the longitudinal axis direction of the linear light source is the direction of the transparent plate having a cross-sectional shape in which the central portion provided in the housing is convex downward. Illuminated picture frame comprising a structure that can illuminate an object to be illuminated, such as a drawing, photograph, document, or workpiece, installed in the bottom surface. The illuminated frame according to claim 1, wherein a transparent glass or acrylic transparent plate is provided on the transparent plate having a cross-sectional shape in which a central portion provided in the housing is convex downward, Illuminated picture frame consisting of a structure that can illuminate the object to be illuminated, such as drawings, photographs, documents or workpieces. 2. An illuminated object by adjusting the optical path by adding a material having a reflecting surface such as a reflecting mirror on the back surface of the light source provided in a straight line in the illuminated frame according to claim 1 or a device for refraction changing the optical path such as a condenser lens on the front surface. Illuminated picture frame with a structure that can irradiate.

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