JPH0114532Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a photosensitive license plate.

As shown in Figs. 1 and 2, a light-sensitive license plate is made of a retractable frame 2 attached to the front of a flat case 1, colored in a specified background color, and with letters 3 punched out. A license plate 4 to which a transparent synthetic resin board is attached is fixed to the case 1, and an illumination lamp 5 is provided inside the case 1, so that the characters 3 of the license plate 4 are illuminated by the illumination lamp 5 at night. This is what I did.

According to this type of photogenic license plate,
Since the character 3 is illuminated by the illumination light 5, there is an advantage that the character 3 on the license plate 4 can be identified even from a long distance.However, on the other hand, the character 3 near the illumination light 5 shines strongly, and the character 3 far away is The drawback is that it produces weak light and uneven light.

For this reason, the light-sensitive license plate currently in use consists of a milky-white semi-transparent light distribution plate 7 or a black color coated with black paint 6 applied to the area corresponding to the illumination light 5 so that it becomes thinner toward the periphery. A milky white translucent light distribution plate 7 (Fig. 3) has a sticker 6' printed on it that becomes thinner towards the periphery.
is interposed between the illumination light 5 and the license plate 4 (Utility Model Publication No. 16308, 1983). By using such a light distribution plate 7, the amount of light in the vicinity of the illumination lamp 5 can be suppressed, so that the uneven light of the characters 3 can be eliminated.

Polypropylene is used as the material for the light distribution plate 7 because of its good flame resistance, but as is well known, polypropylene has extremely poor adhesive properties and there is no effective adhesive. Therefore, it is extremely difficult to apply black paint or adhere a sticker, and it also has the disadvantage that it is easily peeled off due to the heat generated by the illumination lamp 5 and lacks durability.

Furthermore, since a black part is provided on the milky-white plate to suppress the amount of light, the boundary 8 between the black part and the milky-white part appears to stand out as streaks on the letters 3, and furthermore,
By suppressing the amount of light, there was a drawback that the entire character 3 did not shine clearly.

The object of the present invention is to provide a light-sensitive license plate without such drawbacks. Specifically, the object of the present invention is to provide a light-sensitive license plate that has excellent durability, has no unevenness in light, and can illuminate characters more clearly than before.

Therefore, the light-sensitive license plate according to the present invention includes a license plate with letter parts punched out and a transparent or semi-transparent synthetic resin pasted on the letter parts, and a letter light having an illumination lamp for illuminating the letter parts. In the gender license plate, the illumination lamp is a fluorescent light, and a light beam dispersion plate made of methacrylic resin has a flat surface and a back surface with a saw-shaped protrusion or groove formed in the side cross section. The light dispersion plate is placed so as to face the license plate, and a fluorescent light is provided on the side of the light beam dispersion plate.

An embodiment of the photogenic license plate according to the present invention will be described.

According to an embodiment of the present invention, the opening/closing frame 2 attached to the front surface of a flat case 1 is colored in a specified background color and letters 3 are punched out, and the letters 3 are made of transparent synthetic resin, as in the past. This is a fixed number plate 4 with a plate crimped onto it, and its appearance is almost the same as the perspective view shown in FIG. However, according to one embodiment of the light-sensitive license plate according to the present invention, when the opening/closing frame 2 is opened, a light dispersion plate 10 having a flat surface 9 is placed, and the illumination light cover 11 is covered. A fluorescent light (fluorescent light) 12 is provided at the end of the case 1.
(Figures 4 and 5).

FIG. 6 is a side sectional view of this embodiment, and as is clear from FIG.
It is placed inside the case 1 so as to face it.
The back surface 13 of the light dispersion plate 10 has a protrusion 14 having a sawtooth side cross section. On the other hand, the illumination lamp 12 is connected to the protrusion 14 from the thickness of the light dispersion plate 10.
The light dispersion plate 10 is provided on the side of the light dispersion plate 10 so that light rays enter the light dispersion plate 10 from the front or back direction (arrow A) (Figs. 6 and 7).
figure). An illumination light cover 11 is provided on the upper part of the illumination light 12 to prevent light from leaking upward.

FIG. 8 is a side sectional view and a rear view of another light dispersion plate 10 according to the present invention. As is clear from FIG. 8, the light beam dispersing plate 10 has sawtooth grooves 14'
have.

The light beam dispersion plate 10 as described above is manufactured from methacrylic resin because methacrylic resin has optical properties similar to that of an optical fiber, as is well known. The light dispersion plate 10 may have any color. For example, it can be white, milky white, or colorless. Further, although either transparent or opaque materials can be used, transparent or semitransparent materials are preferable because they can transmit a large amount of light.
In particular, it is preferably colorless and transparent. As the illumination light 12, a fluorescent light is used. This is because fluorescent lights can uniformly irradiate the entire end of the light dispersion plate and generate less heat.

According to this type of photogenic license plate,
When light is emitted from the illumination lamp 12 from the end of the light dispersion plate 10, which has a back surface 13 provided with protrusions 14 or grooves 14' having a serrated cross section, the light is emitted from this end to the protrusions of the light dispersion plate 10 made of methacrylic resin. It is reflected by the inclined slope of the portion 14 or groove and refracted in the direction of the flat surface 9 (see arrow B in FIGS. 6 and 8). For this reason, the entire surface 9 shines, and the letters 3 of the license plate 4 shine uniformly.

In this way, according to the present invention, the entire light dispersion plate 10 is illuminated without using black paint or the like.
There are advantages in that the streaks caused by the black-milky white boundary 8 are not seen at all, and the characters 3 shine clearly because the amount of light is not suppressed.

Further, since the fluorescent lamp 12 is used, it is possible to prevent the light dispersion plate 10 from deteriorating due to heat, and it is also possible to illuminate the light dispersion plate 10 more uniformly.

Furthermore, if a colorless and transparent light dispersion plate 10 is used,
There is an advantage that the amount of light increases and the character 3 shines more clearly.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a photosensitive license plate. Figure 2 is a front view of a conventional photogenic license plate when the opening/closing frame is opened, Figure 3 is a front view of a conventional light distribution plate, and Figure 4 is an implementation of a photogenic license plate according to the present invention. FIG. 5 is a front view of the example when the opening/closing frame is opened, FIG. FIG. 8 is a perspective view of an example of a light dispersion plate used in the optical license plate according to the present invention, and FIG. 8 is a perspective view and a side sectional view of another example of the light dispersion plate. 1...Case, 2...Opening/closing frame, 3...Character, 4
... License plate, 5 ... Lighting light, 9 ... Front surface, 10 ... Light dispersion plate, 11 ... Lighting light cover, 12 ... Fluorescent lamp, 13 ... Back side, 14, 1
4'...protrusion or groove.

Claims (1)

[Scope of utility model registration request] A license plate having a character part punched out and a transparent or translucent synthetic resin pasted on the character part, and a light-sensitive license plate having a lighting lamp for illuminating the character part, wherein the lighting lamp is a fluorescent light. At the same time, a methacrylic resin light dispersion plate having a flat surface and a back surface having protrusions or grooves with a serrated side cross section is placed so that the flat surface faces the license plate, and A light-sensitive license plate characterized by a fluorescent light provided on the side of the light dispersion plate.