JPH0425744Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a display device to which an exhibition sheet, such as an advertising poster, is attached and submitted. The present invention relates to a display device that alternately illuminates with a light source having a wavelength distribution and an ultraviolet light source.

[Conventional technology and problems]

The applicant previously filed Japanese Patent Application No. 62-88380 (Japanese Unexamined Patent Publication No.
No. 63-252778) and Japanese Patent Application No. 62-132932 (Japanese Unexamined Patent Publication No. 63-295687), we proposed a new method for producing display sheets and a coloring composition.

This proposal is to manufacture display sheets by printing or drawing calligraphy images using a special ink with a high mixing ratio of fluorescent ink. Both color and gradation appear natural when viewed under UV light or under ultraviolet light.

However, the present invention relates to a display device to which the above-mentioned novel display sheet is attached and is displayed, and since it is itself completely new, there are no problems that need to be improved.

[Purpose of invention]

The purpose of the present invention is to attach the above-mentioned novel display sheet and illuminate it alternately with a normal light source having a normal wavelength distribution and an ultraviolet light source, thereby increasing the display effect of the display sheet. The goal is to provide a display device with a

[Structure of the idea]

In order to achieve the above object, the present invention includes a rectangular substrate on which an exhibition sheet is attached, a pair of ordinary fluorescent lamps and a pair of ultraviolet light emitting fluorescent lamps respectively attached to the outer edge of the surface of this substrate. and a power distribution device that alternately supplies lighting signals to the lighting circuits for the pair of ordinary fluorescent lamps and the lighting circuits for the pair of ultraviolet-emitting fluorescent lamps.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 indicates a substrate, and the substrate 1 in the illustrated embodiment has its outer edge screwed to a back plate 2 to increase its rigidity, as shown in FIG. 2. It is a rectangular iron plate.

The display sheet 3 is attached to the surface of the substrate 1 (the left side in FIG. 2). In order to attach the exhibition sheet 3 to the substrate 1, the exhibition sheet 3 is attached to the substrate 1 using, for example, a transparent adhesive tape such as so-called Cellotape (trade name).

A pair of ordinary fluorescent lamps (hereinafter simply referred to as fluorescent lamps) 5, 5 are provided on the outer edge of the surface of the substrate 1.
and a pair of ultraviolet light-emitting fluorescent lamps (hereinafter simply referred to as ultraviolet lamps) 6, 6 are mounted along the outer edge of the substrate 1, respectively. In the illustrated embodiment, these fluorescent lamps 5, 5 and ultraviolet lamps 6, 6 are straight tube fluorescent lamps, respectively.
A pair of fluorescent lamps 5, 5 are arranged above and below so as to sandwich the display sheet 3 and are substantially parallel to each other, and a pair of ultraviolet lamps 6, 6 are arranged above and below to sandwich the display sheet 3 and to be substantially parallel to each other. They are placed on the left and right, maintaining a nearly parallel positional relationship. In addition,
The fluorescent lamp 5 is desirably one with a so-called high color rendering property whose wavelength distribution is close to that of sunlight.

In the illustrated embodiment, these fluorescent lamps 5, 6, starter 7, ballast 8, etc. are connected to the substrate 1.
It is covered with a cover 9 that is connected to a cover 9, so that it is not directly visible when viewed from the front.

The pair of fluorescent lamps 5, 5, ultraviolet lamps 6, 6, starter 7, ballast 8, etc. are connected as shown in FIG. 3, for example. That is, the pair of fluorescent lamps 5, 5 are connected in parallel to each other, and are connected to the power source 13 through the first switch circuit 11.
The pair of ultraviolet lamps 6, 6 are similarly connected to a power source 13 via a second switch circuit 12.

The first and second switch circuits 11 and 12
receives the lighting signals LS from the power distribution device 14 alternately at regular time intervals, opens a circuit while receiving the lighting signals LS, and lights the corresponding pair of lamps.

However, in a fluorescent lamp, there is a slight time delay after the lighting circuit is energized until the lamp actually lights up, and this so-called lighting delay cannot be avoided in principle. Therefore, if the power supply mode is such that power is cut off to one pair of fluorescent lamps and power is supplied to the other pair at the same time, both fluorescent lamps will be turned off until the other pair of fluorescent lamps lights up. This creates an inconvenience in that the pair of lamps are off and the appearance is poor.

Therefore, in order to eliminate the above-mentioned inconvenience, the power distribution device 14 is configured as shown in FIG. 4, for example.
That is, in FIG. 4, reference numeral 15 indicates a pulse generator having an oscillator and a frequency divider, and a clock pulse CP extracted from the pulse generator 15 is supplied to a counting type flip-flop 16. The time interval between the clock pulses CP and CP, indicated by the symbol T in FIG. 5, is set to be the same as the lighting interval of a pair of fluorescent lamps, which is set, for example, to several seconds to several tens of seconds.

The flip-flop 16 outputs first outputs 01 and 02 alternately at a time interval T as shown in FIG. It is supplied to vibrators 17 and 18, respectively. Then, the output signal of the first monostable multivibrator 17 is supplied to the first switch circuit 11 as the first lighting signal LS-1, and the output signal of the second monostable multivibrator 18 is
It is supplied to the second switch circuit 12 as the second lighting signal LS-2.

Note that the time width of the first lighting signal LS-1 is as follows:
As shown in FIG. 5, the lighting delay time d2 of the ultraviolet lamp 6 is added to the generation timing T of the clock pulse CP, and the second lighting signal
The time width of LS-2 is the generation timing T of the clock pulse CP plus the lighting delay time d1 of the fluorescent lamp 5, and is shown as d1=d2 in FIG.

[Effect]

In the display device according to an embodiment of the present invention configured as described above, the first and second lighting signals LS-1 and LS-2 are supplied to the first and second switch circuits, respectively, at the timings described above. .

As is clear from Figure 5, the first light signal LS
-1 means that after the second lighting signal LS-2 is supplied to the second switch circuit 12, an extra time d1 is given to the first switch circuit until the ultraviolet lamps 6, 6 are turned on.
The second lighting signal LS-2 continues to be supplied to keep the fluorescent lamps 5, 5 on, and conversely, the second lighting signal LS-2 is supplied to the fluorescent lamps 5, 5 after the first switch circuit 11 is closed.
Since the ultraviolet lamps 6, 6 are kept on until the substrate 1 is turned on, the pair of fluorescent lamps 5, 5 and the pair of ultraviolet lamps 6, 6 are turned on alternately without turning off at the same time. The display sheet 3 mounted on the display sheet 3 is illuminated.

As mentioned above, the calligraphic image on the display sheet 3 is printed or drawn using special ink with a high mixing ratio of fluorescent ink, so when illuminated by the fluorescent lamps 5, the illumination light is reflected in the ink. The calligraphy image is observed by light that passes through the ink layer, is reflected on the surface of the calligraphy image carrier such as art paper, passes through the ink layer again, and enters the naked eye. On the other hand, when the exhibition sheet 3 is illuminated by the ultraviolet lamps 6, 6, the fluorescent ink itself emits light due to the ultraviolet rays, and the calligraphy image is observed by the light emitted by the fluorescent ink. In either case, the appearance of the calligraphy image is not the same, but the colors and gradations look natural.

〔effect〕

As is clear from the above explanation, in the present invention, an exhibition sheet printed or drawn with a special ink with a high mixing ratio of fluorescent ink is alternately illuminated with a fluorescent lamp and an ultraviolet lamp. One display sheet appears to be changed every time the lighting is changed, and the effect of displaying the display sheet can be increased. Especially when this display device is installed in a dark place, the display sheet reflects the light of fluorescent lamps and becomes a cool lighting device, and when the display sheet is illuminated with ultraviolet lamps, it becomes a fantastic display device. becomes.

In addition, in the illustrated embodiment, a pair of fluorescent lamps and a pair of ultraviolet lamps are arranged so as to be almost parallel to each other with the exhibition sheet in between, but this is because they are located at the corners of the exhibition sheet. They may also be arranged in an L-shape (not shown). At this time, the pair of fluorescent lamps or the pair of ultraviolet lamps will mainly illuminate one triangular area divided by the diagonal of the exhibition sheet.
Although the entire area cannot be illuminated uniformly, this can be used in reverse and separate patterns can be arranged in the areas illuminated by one pair of lamps and the other pair of lamps, and each pattern can be illuminated using the corresponding lamp type. If appropriate settings are made in accordance with the above, two calligraphy images can be displayed alternately on a single exhibition sheet.

[Brief explanation of the drawing]

FIG. 1 is a front view of a display device according to an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view according to FIG.
Fig. 3 is a line diagram showing an example of the connection of electrical components of the display device according to the present invention, Fig. 4 is a block diagram showing an example of the configuration of the power distribution device, and Fig. 5 is a time chart explaining the operation of the lighting circuit. It is. DESCRIPTION OF SYMBOLS 1... Board, 3... Display sheet, 5... Fluorescent lamp, 6... Ultraviolet lamp, 11... First switch circuit, 12... Second switch circuit, 13...
Power supply, 14...Power distribution device, LS...Lighting signal.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A rectangular substrate on which an exhibition sheet is attached, a pair of ordinary fluorescent lamps and a pair of ultraviolet light-emitting fluorescent lamps respectively attached to the outer edge of the surface of this substrate, and A display device comprising a power distribution device that alternately supplies a lighting signal to a lighting circuit for a pair of ordinary fluorescent lamps and a lighting circuit for a pair of ultraviolet-emitting fluorescent lamps. 2. The display device according to claim 1, wherein the fluorescent lamp is of a straight tube type. 3. The display according to claim 1 or 2 of the utility model registration claim, in which the pair of ordinary fluorescent lamps and the pair of ultraviolet-emitting fluorescent lamps are arranged substantially parallel to each other with an exhibition sheet in between. Device. 4. The display device according to claim 1 or 2, wherein the pair of ordinary fluorescent lamps and the pair of ultraviolet light-emitting fluorescent lamps are arranged in an L-shape with the corners of the exhibition sheet in between.