JP3491525B2 - Display case lighting system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device for a display case, and more particularly to a lighting device for reducing a difference in illuminance distribution on a display surface in the display case.

[0002]

2. Description of the Related Art Conventionally, various types of illuminated display cases have a structure in which an upper part of the display stand is covered with a transparent cover case, an article is placed on the display surface on the upper surface of the display stand, and a lighting device is provided in the cover case. It is provided. For example, the actual public Sho 60-3612
As disclosed in Japanese Patent Publication No. 8, a lamp cover having a straight tube lamp is installed horizontally by a pair of columns that stand upright on the display surface of a display stand, and a part of the peripheral wall of the lamp cover is installed. There is provided a structure for irradiating light downward from the illumination notch formed in the above. Further, as disclosed in Japanese Patent Publication No. 58-12681, an optical fiber is used to guide light from a light source from its proximal end and emit it from the distal end to beautifully illuminate articles such as jewels and jewelry for an exhibition effect. Display devices such as the showcases listed below are provided.

However, in the former case, the illuminance is determined by the position and size of the notch of the lamp cover, and the illuminance is greatly reduced as the distance from the display surface directly below the tube lamp increases, so that the article is effectively illuminated. I can't. In addition, the temperature rise in the cover case due to the heat generated by the tube lamp and the ultraviolet rays emitted from the tube lamp may deteriorate some display materials. Further, the latter one focuses on the modeling and photo-decorative effect of the optical fiber itself, rather than illuminating the exhibited article uniformly.

It is also known to install a diffuser plate having a property of diffusing light at the light emitting end of the optical fiber.

[0005]

In view of the above-mentioned situation, the present invention is to solve the problems by covering the upper part of the display stand with a transparent cover case and placing the article on the display surface on the upper surface of the display stand. In an illuminated display case having a structure in which a lighting device is provided in the cover case, it is possible to reduce the difference in the illuminance distribution on the display surface and to provide an illuminating device for the display case capable of adjusting the illuminance distribution. It is in the point of providing.

[0006]

In order to solve the above-mentioned problems, the present invention relates to a lower surface side of a long holding frame provided at a predetermined height with respect to an exhibition surface in an exhibition case, The holding frame is disposed in the holding frame at regular intervals along the longitudinal direction of the holding frame at positions eccentric to both sides of the center line alternately .
With the tip of the optical fiber or light guide facing the bottom surface
Attach a diffuser at the end and attach an optical fiber or
Light from the light source is guided from the base end of the light guide and emitted from the end
Light projecting unit which is configured illuminating devices plurality comprising display case a. The light projecting section is an optical fiber disposed in the holding frame.
Mount with the tip of the iver or light guide facing the bottom surface
In addition, a diffuser is installed on the other side, and an optical fiber or light is used.
The light from the light source is guided from the base end of the guide and emitted from the tip.
Therefore, it is necessary to provide a large number of light emitting parts with few light sources.
It is possible to prevent the temperature rise in the display case
At the same time, it is possible to suppress the emission of ultraviolet rays from the light projecting section.
is there.

Here, the lower surface of the holding frame can be bent along the center line, and the angle formed between the horizontal plane and the lower surface can be adjusted. It is preferable that the height is adjustable.

[0008]

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 is an overall perspective view of a dual-view display case according to the present invention, FIG. 2 is a vertical cross-sectional view thereof, and FIGS. 3 to 7 show a specific structure of the lighting device of the present invention. A base 2, a cover case, 3 an exhibition surface, 4 a lighting device, 5 a holding frame, and 6 a leg frame. In addition, the code | symbol P in FIG. 1 has shown the sheet-shaped exhibit.

As shown in FIGS. 2, 8 and 9, the display stand 1 has a box shape in which a support frame 7 is surrounded by side plates 8, ... The engaging portion 9 is formed around the surface 3 and is stepped down. The cover case 2 has a box shape that is open downward so as to cover the display surface 3, and is entirely made of a transparent material. In particular, in the case where the exhibit P is a valuable item, in order to prevent deterioration such as discoloration and deterioration due to ultraviolet rays in the present embodiment, the cover case 2 is made of ultraviolet cut glass to form a main body, An edge member 10 engaging with the engaging portion 9 in a concave-convex manner is fixed to the lower edge portion.

Then, one side edge of the edge member 10 of the cover case 2 is attached to the upper surface of the display stand 1 so as to be openable and closable by a hinge 11, and the support frame 7 and the edge member are attached to one side or both sides. A cylinder-shaped gas damper 12 is connected to 10 to facilitate opening and closing of the cover case 2. Further, when the cover case 2 is closed, the edge member 10 engages with the engaging portion 9 of the display stand 1 and is sealed by the packing 13 interposed. The clearance between the engagement portion 9 and the edge member 10 is a curved path so that ultraviolet rays do not enter through the clearance. Reference numeral 11A in FIG. 8 is a flat latch lock.

Therefore, as shown in FIGS. 1 to 7, the illuminating device 4 of the present invention is designed with respect to the display surface 3 within the display case, that is, in the space surrounded by the display surface 3 and the cover case 2. On the lower surface 14 side of the long holding frame 5 installed at the height of
The light projecting portions 15 are arranged at positions which are alternately decentered on both sides with respect to the center line thereof at regular intervals along the longitudinal direction of the holding frame 5.
A plurality of ... Are provided, and the holding frame 5 is mounted between the leg frames 6 and 6 rising from the display surface 3 so that the height can be adjusted. Here, in the double-view display case, the holding frame 5 of the lighting device 4 is provided at the center so that the exhibit P can be viewed from both sides of the lighting device 4 as a boundary.

Further, the lower surface 14 of the holding frame 5 is centered on the center line C.
It can be bent along L, and the angle between the horizontal surface and the lower surface 14 can be adjusted. Specifically, the holding frame 5 includes two long holding members 16 having an L-shaped cross section, which are the lower surface 14, and a cover member 17 which covers the upper portions thereof.
And the holding members 16 and 16 have a plurality of hinges 1.
Each of the holding members 1 is flexibly connected by 8, ...
Mounting plates 19 each having a substantially disc shape are fixed to the ends on the opposite side of 6 at right angles to the longitudinal direction, and the mounting plates 19 are bolted or screwed to the corresponding inner surface of the leg frame 6 so that the angle can be changed. It is attached by a stop. That is, the mounting plate 19
Attaches the position on the extension line of the rotation center of the hinge 18 to the leg frame 6 with the first bolt 20, and attaches the position immediately below the leg frame 6 to the leg frame 6 with the second bolt 21. By forming a circular arc-shaped long hole 22 centered on the first bolt 20 in the portion where the second bolt 21 is inserted, the holding members 16 and 16 have their lower surfaces 14 as shown in FIG. , 14 with respect to the horizontal plane θ
Can be adjusted and installed. Therefore, the angle θ of the lower surface 14 of each holding member 16 can be adjusted independently, and can be set symmetrically or asymmetrically with respect to the center line (the bending line of the hinge 18). still,
The cover member 17 is a long member having a U-shaped cross section that can cover both the holding members 16 and 16 and is attached with its end portion covered on the upper end of the leg frame 6.

The structure for adjusting the height of the holding frame 5 with respect to the display surface 3 is provided in the leg frame 6 in this embodiment. That is, the leg frame 6 is composed of a fixed leg 23 that is fixed to the display surface 3 and a movable leg 24 that slides up and down with respect to the fixed leg 23, and after adjusting the movable leg 24 to a predetermined height position. The overlapping portion of the fixed leg 23 and the movable leg 24 is fixed with the bolt 25. The movable legs 24 are formed with connecting holes 26, ... Through which the bolts 25 are inserted at regular intervals in the vertical direction, and by washing the connecting holes 26, the height of the movable legs 24, that is, the movable legs. The height of the holding frame 5 attached to the upper end of 24 can be adjusted.

Further, as the light projecting portion 15 provided on the lower surface 14 of the holding frame 5, in the present embodiment, a plurality of optical fibers 27, ... Or lights arranged in the holding frame 5 through the leg frame 6 from the display stand 1. Each light guide 2 is attached so that each tip of the guide faces the lower surface 14 and a diffuser (not shown) is provided at the tip of the light guide 2 from the optical fiber 27, ... Or the base end of the light guide.
The one that guides the light of 8 and emits from the tip is adopted.
The light source 28 is installed in the support frame 7 of the display stand 1, and its maintenance can be performed by removing the side plate 8. Further, as the light source 28, a halogen lamp that emits high-intensity light is used. From this halogen lamp, ultraviolet rays are also emitted in addition to visible light, but most of the ultraviolet rays pass through the inside of the optical fiber 27. Is absorbed and emitted from the tip is small. In addition, since infrared rays (heat rays) do not easily pass through the optical fiber 27, the light source 28
Therefore, the temperature inside the cover case 2 does not rise. It is possible to use a plurality of the light sources 28 according to the number of the light projecting portions 15, that is, the number of the optical fibers 27.

In the illuminating device 4 of the present invention, the illuminating device 4 is constructed by disposing a plurality of light projecting portions 15 at positions eccentrically arranged on both sides with respect to the center line CL of the lower surface 14. It is possible to make the illuminance distribution uniform on both sides of the exhibition surface 3 centering on the holding frame 5 and
The mounting angles of 6, 16 are adjusted to adjust the angle of the lower surface 14 provided with the light projecting portion 15, the leg frame 6 is further adjusted to adjust the height of the holding frame 5, and the illuminance on the exhibition surface 3 is further adjusted. It is possible to reduce the difference between. It is also possible to change the illuminance according to the type and the display position of the exhibit P, and further, by providing a neutral density filter at the base end of the optical fiber 27 or changing the brightness of the light source 28, the display surface. It is possible to adjust the illuminance of 3.

Further, in this embodiment, in order to make the lower surface 14 of the holding frame 5 bendable along the center line CL, both holding members 16, 16 are connected by hinges 18, ...
Although the structure is such that the mounting position of 19 on the leg frame 6 can be changed,
The lower surface 14 may be formed of a single bendable plate so that the bending angle can be simply changed. Further, although the light projecting portion 15 has a structure in which the tip of the optical fiber 27 is exposed on the lower surface 14 in the present embodiment, it may be a normal light source if there is no problem of ultraviolet rays or heat generation. good.

[0018]

The lighting device for an exhibition case according to the present invention as described above is provided on the lower surface side of a long holding frame provided at a predetermined height with respect to the exhibition surface in the exhibition case. Lights arranged in the holding frame at positions which are alternately decentered on both sides with respect to the center line thereof at regular intervals along the longitudinal direction of the frame.
Take the tip of the fiber or light guide facing the bottom surface.
Attach a diffuser at the end and attach an optical fiber or
Light from the light source is guided from the base end of the guide and emitted from the tip.
Since plurality comprising a light projecting unit that can reduce the difference in illuminance distribution display surface can also be adjusted Furthermore, the illuminance distribution. Furthermore, in the display case due to the heat generated by the light source
Exhibits due to temperature rises and ultraviolet rays emitted from light sources
It is possible to prevent deterioration of the material.

Further, since the lower surface of the holding frame can be bent along the center line and the angle formed between the horizontal plane and the lower surface can be adjusted, the display frames on both sides of the holding frame of the lighting device can be centered. It is possible to reduce the difference in illuminance distribution, and by mounting the holding frame between the two leg frames rising from the display surface so that the height can be adjusted, the illuminance on the display surface can be adjusted. It is possible to adjust the width of the irradiation range and the illuminance according to the object.

[0020]

[Brief description of drawings]

FIG. 1 is an overall perspective view of an illuminated display case according to the present invention.

FIG. 2 is likewise a simplified vertical sectional view.

FIG. 3 is a front view of the lighting device of the present invention.

FIG. 4 is a transverse sectional view of the same.

FIG. 5 is an enlarged partial cross-sectional view of the same.

FIG. 6 is an enlarged side view of the same.

7A and 7B show a structure for adjusting an angle of a lower surface provided with a light projecting portion, in which FIG. 7A is a sectional view when the angle is 0 °, and FIG.
And (c) is a sectional view when the angle is 30 °.

FIG. 8 is an enlarged partial cross-sectional view showing the structure of the joint between the display stand and the cover case.

FIG. 9 is an enlarged cross-sectional view showing the structure of the hinge part of the display stand and the cover case.

[Explanation of symbols]

1 Exhibition stand 2 Cover case 3 Exhibition surface 4 Lighting equipment 5 Holding frame 6 Leg frame 7 Support frame 8 Side plate 9 Engaging part 10 Edge member 11 Hinges 11A Flat Latch Lock 12 Gas damper 13 Packing 14 Lower surface 15 Light emitting part 16 holding member 17 cover member 18 Hinge 19 Mounting plate 20 1st bolt 21 2nd bolt 22 long hole 23 fixed leg 24 movable legs 25 bolts 26 connection hole 27 optical fiber 28 light source P exhibit CL center line

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoichi Masuda 1-6-11 Awaji-cho, Chuo-ku, Osaka Itoki Co., Ltd. (56) Reference JP-A-9-282917 (JP, A) 64-29708 (JP, U) Actual flat 4-16806 (JP, U) Actual open 59-60972 (JP, U) Actual public 60-36128 (JP, Y1) (58) Fields investigated (Int .Cl. ⁷ , DB name) A47F 11/00 F21V 8/00 F21S 1/02

Claims (3)

(57) [Claims] 1. A lower surface side of a long holding frame provided at a predetermined height with respect to a display surface in a display case, and its center is arranged at regular intervals along the longitudinal direction of the holding frame. Installed in the holding frame at positions that are alternately eccentric to the line.
The optical fiber or the end of the light guide to the lower surface.
Installed and a diffuser on the other side,
Guides the light from the light source from the base end of the light guide and emits it from the tip.
By comprising a plurality of light-projecting portion for output lighting device display case characterized by. 2. The illuminating device for an exhibition case according to claim 1, wherein a lower surface of the holding frame is bendable along a center line, and an angle formed between a horizontal plane and the lower surface is adjustable. 3. The lighting device for a display case according to claim 1, wherein the holding frame is mounted between the two leg frames rising from the display surface so as to be adjustable in height.