JP3158857U - Illuminated picture frame - Google Patents

Abstract

There is provided an illuminated frame that can illuminate even a relatively large screen even without specially processing a drawing or a photograph.
A light source provided in a straight line along a hollow inner surface of an outer peripheral wall surface of a box-shaped housing, and a pair of reflecting surfaces provided at respective inner surface positions of a housing edge and a bottom surface in the vicinity of the light source. And a transparent plate such as glass or acrylic provided at the center surrounded by the edge of the casing. By providing a pair of these on opposite edge portions, the surface of the object to be illuminated is illuminated substantially uniformly over the entire surface by a complementary effect.
[Selection] Figure 1

Description

The present invention has a lighting device inside the edge of a box-shaped picture frame, and a picture frame, a photo stand, a display board, etc. that illuminates an object to be illuminated (hereinafter called the object to be illuminated) such as a picture, photograph or document installed on its bottom surface ( The following description relates to a frame and the like device and method.

In recent years, dedicated devices that display various digital photographic information obtained by digital cameras as so-called “digital photo frames” on a liquid crystal display device have been commercialized and are becoming widespread. There is also a display device that prints a photograph or film on a transparent resin plate in a semi-transparent state using a special method and irradiates it with a so-called backlight light source from the back. However, as shown in the following document, screens such as drawings and photographs are printed. Alternatively, devices such as a picture frame and a photo stand that illuminate and display the actual printed material such as paper or cloth can hardly be confirmed in the market at present.

Utility model literature

Registered Utility Model No. 3154022

Utility model literature

Actual application 2009-007946

In the present invention, a light source provided along the hollow inside of the outer peripheral wall surface of the casing is substantially uniform despite having a relatively large surface area although the thickness of the illuminated object mounted in the casing is small as it is. Provide a picture frame that can be illuminated. The surface area of the object to be illuminated is, for example, larger than a postcard up to about a poster, and the housing has a thickness of about several centimeters or less to realize a practical form.

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, such as a drawing. It is natural to irradiate the object to be illuminated from the front with a light source housed in a peripheral part (edge part) of a frame housing where space is available. However, at this time, the light source illuminates the illuminated body from the side, so that the portion near the light source is bright and the far portion is likely to be dark, so even if many illumination light sources are provided around the frame, the illuminated body There is a tendency that the peripheral part of the light 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 in the box-shaped housing, and the light source is stored on the outer wall side of the space provided on the inner side of the frame edge on the upper periphery of the frame. It is set so as to be emitted toward the object to be illuminated on the bottom surface substantially parallel or slightly below the transparent glass or acrylic resin surface (hereinafter referred to as transparent plate) provided on the upper surface of the frame. The light source is a linear light-emitting body such as a fluorescent tube or a cold cathode fluorescent lamp (CCFL) or a light-emitting diode (LED) arranged appropriately on a plurality of straight lines, provided inside one or more edges of the frame. A pair of reflecting surfaces are provided so that light emitted radially from the light source directly irradiates the object to be illuminated, and light that does not reach directly is opposed to the inside edge of the frame edge and the opposite bottom surface. Further, the object to be illuminated is illuminated by being reflected by a reflection system constituted by the inner and rear surfaces of the transparent plate on the upper surface. Here, the light directly reaching the object to be illuminated is brighter in the part near the light source and brighter in the part far away from the light source, so that it becomes darker and the illuminance of the object to be illuminated becomes uneven and uniform and clear as described above. However, the present invention suppresses such inconvenience by using a method of effectively utilizing non-direct light from the light source so that it is irradiated farther than the light source by reflection of the reflection system. Eliminate. In particular, when a light source and a reflective surface similar to those described above are provided on the opposite side of the frame edge of the light source, the two light sources can be paired to complement each other and the illumination can be more evenly illuminated.

Effect of device

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, etc. in a normal state can be used as a photo frame. It can also be used for illuminated advertising boards, display devices, 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 of FIGS. FIG. 1 is a schematic perspective view of a structure of an illuminated frame as a representative example of the device according to the present invention, and FIG. 2 is a sectional view taken along line XX in FIG. The structure of the apparatus is mainly the main body (1) of the illuminated frame case, the frame edge (2) the transparent plate (3) at the upper center of the frame case, and the main structure and the frame on the bottom surface (6) of the case. An illumination light source (4) provided on the inner surface of the edge portion (2), a pair of reflection surfaces (7) provided in the vicinity, and an object to be illuminated (5) such as illuminated drawings and photographs.

The Y-Y line in FIG. 1 indicates a generally longitudinal direction perpendicular to the paper surface of the casing of the frame body (1), and the light source (4) installed in the frame edge (2) is in the form of a fluorescent tube or When it can be regarded as a CCFL equilinear light source, its longitudinal direction is set in a direction parallel to this, and when a plurality of LEDs are arranged as appropriate, it is appropriately mounted on a parallel straight line. Each arrangement | positioning state is shown with a broken line in the right side edge part and left side edge part of FIG. The side cross section of FIG. 2 shows the effect of the present invention in the optical path of the light emitted from the linear light source (4). 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 line in the optical path indicates the illuminated object (on the bottom surface (6) of the housing) In the normal case where the light source (4) is not directly controlled by refraction or reflection, the A part close to the illuminated body (5) has a large amount of light and is far away. Part B is relatively dark with a small amount of light. Since this illuminance is almost inversely proportional to the square of the distance from the A portion, even if a similar light source is provided on the opposite side, the central portion illuminated by both is darkest and uniform illuminance cannot be obtained. An optical path other than the direct light directed to the directly illuminated body (5) is indicated by a broken line, a chain line, etc., but is reflected by the reflecting surface (7) and the transparent plate (3) and can reach the B portion farther from the A portion. As shown in the figure, the light is emitted once or plural times on the reflecting surface (7) provided downward in the frame edge (2) and the reflecting surface (7) provided on a part of the bottom surface facing the same. This is because after being reflected once, it goes to the illuminated body (5), or reaches the transparent plate (3) and reflects again here, and then goes toward the illuminated body (5) and is carried further away. As a result, the illuminated object (5) is illuminated to a position away from the light source, and the illuminance is greatly improved. The transparent plate (3) is totally reflected when the incident angle of light is sufficiently small (about 5 degrees or less), and the effect on distant illumination is increased, so that the light source (4) and the main axis of light (see FIG. 2) (indicated by a two-dot chain line), and the combination and position of the reflecting surface (7). Specifically, if the light source (4) is lifted upward and the optical principal axis direction is parallel to or slightly below the transparent plate (3), total reflection can be easily obtained, but the form of the light source (4), the shape of the frame, the transparent plate ( The position and form of each other are appropriately determined by comprehensively judging from the characteristics of 3).

When the light source (4) is a fluorescent tube, CCFL, etc., the optical path is also directed to the back side, so that it is reflected forward (toward the body to be illuminated) by the reflecting mirror (8) having a substantially parabolic cross section, or individually like an LED. In the point light source, the object of the present invention can be supplemented by adjusting the optical path by providing a substantially convex lens (81) that refracts within an appropriate solid angle forward. In the case of an LED light source, if a transparent or semi-transparent light diffusing plate (9) is provided in the optical path, the illumination effect may be improved closer to the characteristics of the line light source. The reflecting mirror (8), the lens (81), and the light diffusing plate (9) are all stored below the frame edge (2) so that they cannot be seen from above the frame housing. As shown in FIG. 2, a reflecting surface (7) is provided inside the wall surface of the right casing body (1) to reflect a part of the direct light or the reflected light from the transparent plate (3) to illuminate the object (5 It is possible to improve the illumination in the vicinity of part B), but usually a light source and a reflection system are provided on each of the pair of opposite frame edge parts (2) as shown in FIG. A substantially uniform illumination effect is obtained by the illuminance complementing action by the light source. Providing the same light source and reflection system in each of the remaining frame edges (2) further improves the overall illuminance and can be set as necessary.

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

(1) Body (2) Edge (3) Transparent plate (4) Light source (5) Illuminated body (6) Bottom surface (7) Reflecting surface (8) Reflecting mirror (9) Light diffusing plate (81) Lens

Claims (4)

A light source provided in a straight line adjacent to the hollow inner surface of the outer peripheral wall surface of the box-shaped housing, a pair of reflecting surfaces provided at respective inner surface positions of the housing edge and bottom face in the vicinity of the light source, and the housing Illuminated picture frame that can illuminate an object to be illuminated such as a drawing, photograph or document placed inside the bottom of the casing by a combination of glass or acrylic transparent plates provided in the center surrounded by the edge. A light source provided in a straight line adjacent to the hollow inner surface of the outer peripheral wall surface of the box-shaped housing in the illuminated frame according to claim 1 and each inner surface position of the housing edge and the bottom surface in the vicinity of the light source. A pair of light source systems each composed of a pair of reflecting surfaces and another light source system having the same configuration are provided along the hollow inner surface of the outer peripheral wall surface of the casing, and in the center surrounded by the edge of the casing. Illuminated picture frame that allows two sets of light source systems to mutually complement the illuminance and irradiate the object to be illuminated substantially evenly by sharing a transparent plate such as glass or acrylic provided. The illuminated frame according to claim 1, wherein a material having a reflecting surface is added to the back surface of a light source provided in a straight line in the illuminated frame or a device for refraction changing the optical path such as a condensing lens is added to the front surface to adjust the optical path and irradiate the object to be illuminated. Illuminated picture frame. The illuminated frame according to claim 1, wherein a transparent or translucent light diffusing plate is added below the frame edge in the optical path in the vicinity of the light source provided linearly in the illuminated frame according to claim 1. .

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